All Stories

  1. Low temperature tin oxide electron transport layers for flexible perovskite solar cells: A review

    Article • Solar Energy, April 2026, Elsevier

    Dr Akrajas Ali Umar

  2. Defect engineering and graphene quantum dot functionalization synergistically modulate charge transfer and photocurrent stability in TiO2 photoanodes

    Article • Surfaces and Interfaces, February 2026, Elsevier

    Dr Akrajas Ali Umar

  3. Enhanced optoelectrical dynamics in ambient-processed CsFAMAPbX3 perovskite solar cells by lithium organic salt doping

    Article • Journal of Materials Science Materials in Electronics, December 2025, Springer Science + Business Media

    Dr Akrajas Ali Umar

  4. Biosensor Innovations for Acute Kidney Injury (AKI) and Chronic Kidney Disease (CKD) Diagnostics

    Article • ACS Applied Bio Materials, October 2025, American Chemical Society (ACS)

    Dr Akrajas Ali Umar

  5. Effect of electrolyte pH on room-temperature photoelectrodeposition of Cu2O for hydrogen evolution reaction

    Article • Clean Energy, September 2025, Oxford University Press (OUP)

    Dr Akrajas Ali Umar

  6. Enhanced electrocatalytic activities in TiO2-sulfur nanoparticles decorated graphene nanocomposite electrode for detecting formaldehyde compound

    Article • Chinese Journal of Chemical Engineering, April 2025, Elsevier

    Dr Akrajas Ali Umar

  7. Large perovskite grain's crystal synthesis for enhanced solar cells efficiency

    Article • Journal of the Taiwan Institute of Chemical Engineers, March 2025, Elsevier

    Dr Akrajas Ali Umar

  8. Influence of Sorbitol and Glycerol on Physical and Tensile Properties of Biodegradable–Edible Film From Snakehead Gelatin and κ‐Carrageenan

    Article • International Journal of Food Science, January 2025, Wiley

    Dr Akrajas Ali Umar

  9. Fe-doped TiO2 nanocrystals as highly efficient catalysts for heterogeneous catalytic transesterification of coconut oil

    Article • Journal of the Taiwan Institute of Chemical Engineers, November 2024, Elsevier

    Dr Akrajas Ali Umar

  10. Enhancing the Phase Crystallinity of Buried Layer Perovskites through Organic Salt Molecule‐Assisted Crystal Growth

    Article • Solar RRL, July 2024, Wiley

    Dr Akrajas Ali Umar

  11. Enhancing the photothermal efficiency of MoS2 through ultraviolet-ozone exposure for improved solar evaporation

    Article • Surfaces and Interfaces, May 2024, Elsevier

    Dr Akrajas Ali Umar

  12. Molybdenum doped tin oxide as electron transport material in air-processable perovskite solar cells

    Article • Applied Physics A, March 2024, Springer Science + Business Media

    Dr Akrajas Ali Umar

  13. Optoelectrical Dynamic of Perovskite Solar Cells Under Perovskite and Electron Transport Layer Crystallinity Effect

    Article • IEEE Transactions on Materials for Electron Devices, January 2024, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Akrajas Ali Umar

  14. Raman spectroscopy of nanocomposites ZnO/ZnS and ZnO/ZnSe obtained by solvothermal-microwave synthesis method

    Article • Scientific and technical journal of information technologies mechanics and optics, December 2023, ITMO University

    Dr Akrajas Ali Umar

  15. Improving the optoelectrical properties of humid stable, hexamined perovskite lattice by phenetylammonium cation additive

    Article • Optical Materials, November 2023, Elsevier

    Dr Akrajas Ali Umar

  16. Air-Processable Perovskite Solar Cells by Hexamine Molecule Phase Stabilization

    Article • ACS Omega, May 2023, American Chemical Society (ACS)

    Dr Akrajas Ali Umar

  17. The fingerprint of charge transport mechanisms on the incident photon-to-current conversion efficiency spectra of perovskite solar cells

    Article • Solar Energy Materials and Solar Cells, May 2023, Elsevier

    Dr Akrajas Ali Umar

  18. Optoelectrical Properties of Hexamine Doped-Methylammonium Lead Iodide Perovskite under Different Grain-Shape Crystallinity

    Article • Nanomaterials, April 2023, MDPI AG

    Dr Akrajas Ali Umar

  19. Improved photoactivity of TiO2 photoanode of dye-sensitized solar cells by sulfur doping

    Article • Journal of Physics and Chemistry of Solids, April 2023, Elsevier

    Dr Akrajas Ali Umar

  20. Improvement of the performance of dye-sensitized solar cells employing NickelPalladium alloy-reduced graphene oxide counter electrode: Influence of palladium content

    Article • Optik, April 2023, Elsevier

    Dr Akrajas Ali Umar

  21. Effect of Carbonization Temperature of Rice Husk Char Preparation on SiC Structure and Composition of By-Products in SiC Synthesis with Magnesiothermic Reduction Method

    Article • Processes, January 2023, MDPI AG

    Dr Akrajas Ali Umar

  22. Iridium–palladium binary alloy as a counter electrode in dye-sensitized solar cells

    Article • Dalton Transactions, January 2023, Royal Society of Chemistry

    Dr Akrajas Ali Umar

  23. Enhanced-charge transfer over molecularly imprinted polyaniline modified graphene/TiO2 nanocomposite electrode for highly selective detection of fipronil insecticide

    Article • Materials Science in Semiconductor Processing, November 2022, Elsevier

    Dr Akrajas Ali Umar

  24. Photoelectrical process uplift in Mg-doped-TiO2 photoanode of dye-sensitized solar cells

    Article • Optical Materials, November 2022, Elsevier

    Dr Akrajas Ali Umar

  25. Highly active visible-light-driven photo-electrocatalytic process in TiO2/Ti electrode by Te doping

    Article • Journal of Applied Electrochemistry, October 2022, Springer Science + Business Media

    Dr Akrajas Ali Umar

  26. Formation of Ultimate Thin 2D Crystal of Pt in the Presence of Hexamethylenetetramine

    Article • International Journal of Molecular Sciences, September 2022, MDPI AG

    Dr Akrajas Ali Umar

  27. Propylene Glycol Directed Synthesis of Silver Nanowires for Transparent Conducting Electrode Application

    Article • Journal of Electronic Materials, June 2022, Springer Science + Business Media

    Dr Akrajas Ali Umar

  28. Charge transfer uplift in dye-sensitized solar cells using fibrous nanocrystals of platinum-based bimetallic counter electrodes

    Article • Surfaces and Interfaces, October 2021, Elsevier

    Dr Akrajas Ali Umar

  29. NickelPalladium alloy–reduced graphene oxide as counter electrode for dye-sensitized solar cells

    Article • Journal of Molecular Liquids, March 2021, Elsevier

    Dr Akrajas Ali Umar

  30. Photoelectrical Dynamics Uplift in Perovskite Solar Cells by Atoms Thick 2D TiS2 Layer Passivation of TiO2 Nanograss Electron Transport Layer

    Article • ACS Applied Materials & Interfaces, January 2021, American Chemical Society (ACS)

    Dr Akrajas Ali Umar

  31. On the performance of polymer-inorganic perovskite oxide composite light-emitting diodes: The effect of perovskite SrTiO3 additives

    Article • Nanomaterials and Nanotechnology, January 2021, SAGE Publications

    Dr Akrajas Ali Umar

  32. Tuning the photocatalytic activity of nanocomposite ZnO nanorods by shape-controlling the bimetallic AuAg nanoparticles

    Article • Applied Surface Science, January 2021, Elsevier

    Dr Akrajas Ali Umar

  33. Seed-Mediated Synthesis and Photoelectric Properties of Selenium Doped Zinc Oxide Nanorods

    Article • Sains Malaysiana, December 2020, Penerbit Universiti Kebangsaan Malaysia (UKM Press)

    Dr Akrajas Ali Umar, Dr Yanuar Hamzah

  34. Effect of annealing treatment on multilayer TiO2 films on the performance of dye-sensitized solar cells

    Article • Optik, September 2020, Elsevier

    Dr Akrajas Ali Umar

  35. Micro-strain effect on electronic properties in graphene induced by silver nanowires

    Article • Physica E Low-dimensional Systems and Nanostructures, September 2020, Elsevier

    Dr Akrajas Ali Umar

  36. The influence of MoSe2 coated onto Pt film to DSSC performance with the structure TiO2/Dye/LxMoSe2Pt (0 ≤ x ≤ 5)

    Article • Materials Letters, September 2020, Elsevier

    Dr Akrajas Ali Umar

  37. Photoelectrical properties of anatase TiO2 with different morphologies under Au plasmonic effect

    Article • Applied Physics A, August 2020, Springer Science + Business Media

    Dr Akrajas Ali Umar

  38. Enhanced Charge Transfer in Atom‐Thick 2H–WS 2 Nanosheets’ Electron Transport Layers of Perovskite Solar Cells

    Article • Solar RRL, August 2020, Wiley

    Dr Akrajas Ali Umar

  39. Enhanced visible light-driven photocatalytic degradation supported by Au-TiO2 coral-needle nanoparticles

    Article • Journal of Photochemistry and Photobiology A Chemistry, July 2020, Elsevier

    Dr Akrajas Ali Umar

  40. Influence of annealing temperature of ZnS-coated TiO2 films on the performance of dye-sensitized solar cells

    Article • Optik, June 2020, Elsevier

    Dr Akrajas Ali Umar

  41. Dependence of optical properties of Mg-doped ZnO nanorods on Al dopant

    Article • Surfaces and Interfaces, June 2020, Elsevier

    Dr Akrajas Ali Umar

  42. Ultra-thin MoS2 nanosheet for electron transport layer of perovskite solar cells

    Article • Optical Materials, June 2020, Elsevier

    Dr Akrajas Ali Umar

  43. Fabrication of Pt-Pd@ITO grown heterogeneous nanocatalyst as efficient remediator for toxic methyl parathion in aqueous media

    Article • Environmental Science and Pollution Research, January 2020, Springer Science + Business Media

    Dr Akrajas Ali Umar

  44. A two-dimensional crystal growth in anatase titania nanostructures driven by trigonal hydronium ions

    Article • RSC Advances, January 2020, Royal Society of Chemistry

    Dr Akrajas Ali Umar

  45. Highly dynamic charge transfer in single-crystalline TiO2 nanograss electron transport layer

    Article • Journal of Materials Chemistry A, January 2020, Royal Society of Chemistry

    Dr Akrajas Ali Umar

  46. Liquid Phase Deposition of TiO2 Films for Electron Transport Layer of Perovskite Solar Cells

    Article • Journal of Nano- and Electronic Physics, January 2020, Sumy State University

    Dr Akrajas Ali Umar, Dr Yanuar Hamzah

  47. Optical, structural and morphological studies of TiO2 thin film synthesized by liquid phase deposition method

    Article • January 2020, American Institute of Physics

    Dr Akrajas Ali Umar, Dr Yanuar Hamzah

  48. Fibrous bimetallic silver palladium and ruthenium palladium nanocrystals exhibit an exceptionally high active catalytic process in acetone hydrogenation

    Article • Materials Today Chemistry, December 2019, Elsevier

    Dr Akrajas Ali Umar

  49. Highly sensitive fipronil pesticide detection on ilmenite (FeO.TiO2)-carbon paste composite electrode

    Article • Surfaces and Interfaces, September 2019, Elsevier

    Dr Akrajas Ali Umar

  50. TiO2 Coated-Asphalt Buton Photocatalyst for High-Performance Motor Vehicles Gas Emission Mitigation

    Article • Emission Control Science and Technology, August 2019, Springer Science + Business Media

    Dr Akrajas Ali Umar

  51. Synthesis and electrochemical performance of graphene-TiO2-carbon paste nanocomposites electrode in phenol detection

    Article • Journal of Physics and Chemistry of Solids, August 2019, Elsevier

    Dr Akrajas Ali Umar

  52. Reka Bentuk Sensor Pendar Cahaya Bintik Kuantum ZnCdSe untuk Mengesan Racun Perosak

    Article • Sains Malaysiana, July 2019, Penerbit Universiti Kebangsaan Malaysia (UKM Press)

    Dr Akrajas Ali Umar

  53. Enhanced charge transfer activity in Au nanoparticles decorated ZnO nanorods photoanode

    Article • Physica E Low-dimensional Systems and Nanostructures, July 2019, Elsevier

    Dr Akrajas Ali Umar

  54. Humidity effect on photoelectrical properties of photosensitive field effect transistors

    Article • Organic Electronics, June 2019, Elsevier

    Dr Akrajas Ali Umar

  55. Chalcogenide material as high photoelectrochemical performance Se doped TiO2/Ti electrode: Its application for Rhodamine B degradation

    Article • Journal of Physics Conference Series, June 2019, Institute of Physics Publishing

    Dr Akrajas Ali Umar

  56. Zinc sulphide-coated titanium dioxide films as photoanode for dye-sensitized solar cells: Effect of immersion time on its performance

    Article • Superlattices and Microstructures, June 2019, Elsevier

    Dr Akrajas Ali Umar

  57. Lead‐Free Cs 2 BiAgBr 6 Double Perovskite‐Based Humidity Sensor with Superfast Recovery Time

    Article • Advanced Functional Materials, April 2019, Wiley

    Dr Akrajas Ali Umar

  58. Improvement of dye-sensitized solar cell performance by utilizing graphene-coated TiO2 films photoanode

    Article • Superlattices and Microstructures, April 2019, Elsevier

    Dr Akrajas Ali Umar

  59. Thermal impact on (001) faceted anatase TiO2 microtablets and nanowalls's lattices and its effect on the photon to current conversion efficiency

    Article • Journal of Physics and Chemistry of Solids, April 2019, Elsevier

    Dr Akrajas Ali Umar

  60. Effect of Silver Concentration towards Formationof AgPt Nanofernfilms as SERS Substrates

    Article • Materials Science Forum, March 2019, Trans Tech Publications

    Dr Akrajas Ali Umar, Professor Joe G Shapter

  61. Bimetallic AuAg sharp-branch mesoflowers as catalyst for hydrogenation of acetone

    Article • Materials Chemistry and Physics, March 2019, Elsevier

    Dr Akrajas Ali Umar

  62. High performance cypermethrin pesticide detection using anatase TiO2-carbon paste nanocomposites electrode

    Article • Microchemical Journal, March 2019, Elsevier

    Dr Akrajas Ali Umar

  63. Dye-sensitized solar cell utilizing TiO2–sulphur composite photoanode: influence of sulphur precursor content

    Article • SN Applied Sciences, February 2019, Springer Science + Business Media

    Dr Akrajas Ali Umar

  64. TiO2–SrTiO3 composite photoanode: effect of strontium precursor concentration on the performance of dye-sensitized solar cells

    Article • Applied Physics A, January 2019, Springer Science + Business Media

    Dr Akrajas Ali Umar

  65. Facile charge transfer in fibrous PdPt bimetallic nanocube counter electrodes

    Article • New Journal of Chemistry, January 2019, Royal Society of Chemistry

    Dr Akrajas Ali Umar

  66. Highly efficient planar perovskite solar cells via acid-assisted surface passivation

    Article • Journal of Materials Chemistry A, January 2019, Royal Society of Chemistry

    Dr Akrajas Ali Umar

  67. Optimum growth time in AgPt nanofern preparation for enhancement of surface-enhanced Raman scattering intensity

    Article • Advances in Natural Sciences Nanoscience and Nanotechnology, December 2018, Institute of Physics Publishing

    Dr Akrajas Ali Umar

  68. Dye-sensitized solar cell utilizing silver doped reduced graphene oxide films counter electrode: Influence of annealing temperature on its performance

    Article • Arabian Journal of Chemistry, November 2018, Elsevier

    Dr Akrajas Ali Umar

  69. Geant4 Step towards the Durability and Smooth Response of Silicon Based Neutron Dosimeter, and Protection from Thermal Neutrons

    Article • November 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Akrajas Ali Umar

  70. Structural and properties transformation in ZnO hexagonal nanorod by ruthenium doping and its effect on DSSCs power conversion efficiency

    Article • Superlattices and Microstructures, November 2018, Elsevier

    Dr Akrajas Ali Umar

  71. Effect of N719 Dye Dipping Temperature on the Performance of Dye-Sensitized Solar Cell

    Article • Russian Journal of Electrochemistry, October 2018, Pleiades Publishing Ltd

    Dr Akrajas Ali Umar

  72. Hierarchical Bimetallic AgPt Nanoferns as High-Performance Catalysts for Selective Acetone Hydrogenation to Isopropanol

    Article • ACS Omega, September 2018, American Chemical Society (ACS)

    Dr Akrajas Ali Umar

  73. Synthesis of white fluorescent pyrrolic nitrogen-doped graphene quantum dots

    Article • Optical Materials, September 2018, Elsevier

    Dr Akrajas Ali Umar

  74. Urea and creatinine detection on nano-laminated gold thin film using Kretschmann-based surface plasmon resonance biosensor

    Article • PLOS One, July 2018, PLOS

    Dr Akrajas Ali Umar

  75. Effect of Annealing Temperature of Gold Doped Reduced Graphene Oxide Counter Electrode on the Performance of Dye- sensitized Solar Cell

    Article • International Journal of Electrochemical Science, June 2018, ESG

    Dr Akrajas Ali Umar

  76. TiO2-coated ZnS films as photoanode for dye-sensitized solar cell: effect of zinc nitrate hexahydrate concentration on the performance

    Article • Applied Physics A, May 2018, Springer Science + Business Media

    Dr Akrajas Ali Umar

  77. Dye-sensitized solar cell utilizing gold doped reduced graphene oxide counter electrode: Influence of annealing time

    Article • Micro & Nano Letters, May 2018, the Institution of Engineering and Technology (the IET)

    Dr Akrajas Ali Umar

  78. Mn-doping-induced photocatalytic activity enhancement of ZnO nanorods prepared on glass substrates

    Article • Applied Surface Science, May 2018, Elsevier

    Dr Akrajas Ali Umar

  79. Perovskite-sensitized solar cells-based Ga–TiO2 nanodiatom-like photoanode: the improvement of performance by perovskite crystallinity refinement

    Article • Applied Physics A, April 2018, Springer Science + Business Media

    Dr Akrajas Ali Umar

  80. Dye-sensitized solar cell utilizing silver-reduced graphene oxide film counter electrode: effect of silver content on its performance

    Article • Ionics, March 2018, Springer Science + Business Media

    Dr Akrajas Ali Umar

  81. Two-Dimensional, Hierarchical Ag-Doped TiO2 Nanocatalysts: Effect of the Metal Oxidation State on the Photocatalytic Properties

    Article • ACS Omega, March 2018, American Chemical Society (ACS)

    Dr Akrajas Ali Umar

  82. Effect of surface density silver nanoplate films toward surface-enhanced Raman scattering enhancement for bisphenol A detection

    Article • Journal of Physics Conference Series, March 2018, Institute of Physics Publishing

    Dr Akrajas Ali Umar

  83. Hydrothermally grown of well-aligned ZnONRs: dependence of alignment ordering upon precursor concentration

    Article • Journal of Materials Science Materials in Electronics, January 2018, Springer Science + Business Media

    Dr Akrajas Ali Umar

  84. Advances in porous and high-energy (001)-faceted anatase TiO2 nanostructures

    Article • Optical Materials, January 2018, Elsevier

    Dr Akrajas Ali Umar

  85. Dye-Sensitized Solar Cell Utilizing TiO2 Nanostructure Films: Effect of Synthesis Temperature

    Article • Russian Journal of Electrochemistry, January 2018, Pleiades Publishing Ltd

    Dr Akrajas Ali Umar

  86. Effect of hexamethylenetetramine (HMT) concentration on the properties of boron doped ZnO nanotubes array films and the performance of dye-sensitized solar cell (DSSC)

    Article • January 2018, American Institute of Physics

    Dr Akrajas Ali Umar

  87. Comparative trial of saccharin-added electrolyte for improving the structure of an electrodeposited magnetic FeCoNi thin film

    Article • Thin Solid Films, November 2017, Elsevier

    Dr Akrajas Ali Umar, Dr Shinya Maenosono

  88. Synthesis of Blue-Luminescence Graphene Quantum Dots Using Hydrothermal Method

    Article • Solid State Phenomena, October 2017, Trans Tech Publications

    Dr Akrajas Ali Umar

  89. High figure of merit transparent conducting Sb-doped SnO 2 thin films prepared via ultrasonic spray pyrolysis

    Article • Journal of Alloys and Compounds, October 2017, Elsevier

    Dr Akrajas Ali Umar

  90. Influence of Ag ion adsorption on the photoactivity of ZnO nanorods for dye-sensitized solar cell application

    Article • Materials Express, August 2017, American Scientific Publishers

    Dr Akrajas Ali Umar

  91. Graphene Growth at Low Temperatures using RF-Plasma Enhanced Chemical Vapour Deposition

    Article • Sains Malaysiana, July 2017, Penerbit Universiti Kebangsaan Malaysia (UKM Press)

    Dr Akrajas Ali Umar

  92. Scalable Mesoporous Platinum Diselenide Nanosheet Synthesis in Water

    Article • ACS Omega, July 2017, American Chemical Society (ACS)

    Dr Akrajas Ali Umar

  93. Synthesis of two-dimensional nanowall of Cu-Doped TiO 2 and its application as photoanode in DSSCs

    Article • Physica E Low-dimensional Systems and Nanostructures, July 2017, Elsevier

    Dr Akrajas Ali Umar

  94. Dye-sensitized Solar Cell (DSSC) Utilizing TiO2 Films Prepared via Microwave Irradiation Technique: Effect of TiO2 Growth Time

    Article • Journal of New Materials for Electrochemical Systems, June 2017, Journal of New Materials for Electrochemical Systems

    Dr Akrajas Ali Umar

  95. Effect of Spin-Coating Cycle on the Properties of TiO2 Thin Film and Performance of DSSC

    Article • International Journal of Electrochemical Science, June 2017, ESG

    Dr Akrajas Ali Umar

  96. Green synthesis of few-layered graphene from aqueous processed graphite exfoliation for graphene thin film preparation

    Article • Materials Chemistry and Physics, June 2017, Elsevier

    Dr Akrajas Ali Umar

  97. Synthesis of silver–platinum nanoferns substrates used in surface-enhanced Raman spectroscopy sensors to detect creatinine

    Article • Advances in Natural Sciences Nanoscience and Nanotechnology, June 2017, Institute of Physics Publishing

    Dr Akrajas Ali Umar

  98. SiO2 caped Fe3O4 nanostructures as an active heterogeneous catalyst for 4-nitrophenol reduction

    Article • Microsystem Technologies, May 2017, Springer Science + Business Media

    Dr Akrajas Ali Umar

  99. Design and measurement technique of surface-enhanced Raman scattering for detection of bisphenol A

    Article • Advances in Natural Sciences Nanoscience and Nanotechnology, May 2017, Institute of Physics Publishing

    Dr Akrajas Ali Umar

  100. Influence of ZnO growth temperature on the performance of dye-sensitized solar cell utilizing TiO2-ZnO composite film photoanode

    Article • Ionics, May 2017, Springer Science + Business Media

    Dr Akrajas Ali Umar

  101. Gold Nanoplates for a Localized Surface Plasmon Resonance-Based Boric Acid Sensor

    Article • Sensors, April 2017, MDPI AG

    Dr Akrajas Ali Umar

  102. Comparative study of the properties of TiO2 nanoflower and TiO2-ZnO composite nanoflower and their application in dye-sensitized solar cells

    Article • Ionics, February 2017, Springer Science + Business Media

    Dr Akrajas Ali Umar

  103. Direct deposition of silver nanoplates on quartz surface by sequence pre-treatment hydroxylation and silanisation

    Article • MethodsX, January 2017, Elsevier

    Dr Akrajas Ali Umar

  104. Multi-cycle Growth of Boron Doped ZnO Films as Photoanode for Dye-Sensitized Solar Cell (DSSC)

    Article • International Journal of Electrochemical Science, December 2016, ESG

    Dr Akrajas Ali Umar

  105. Fibrous platinum nanocubes modified indium tin oxide electrodes for effective electrooxidation of alcohols and sensitive detection of hydrazine

    Article • Journal of Electroanalytical Chemistry, October 2016, Elsevier

    Dr Akrajas Ali Umar

  106. Dye-sensitized solar cell (DSSC) utilizing reduced graphene oxide (RGO) films counter electrode: effect of graphene oxide (GO) content

    Article • Journal of Materials Science Materials in Electronics, September 2016, Springer Science + Business Media

    Dr Akrajas Ali Umar

  107. Performance of Dye-Sensitized Solar Cell Utilizing Ga-ZnO Nanorods: Effect of Ga Concentration

    Article • International Journal of Electrochemical Science, September 2016, ESG

    Dr Akrajas Ali Umar

  108. Configurable impedance matching to maximise power extraction for enabling self-powered system based-on photovoltaic cells

    Article • Electronic Materials Letters, July 2016, Springer Science + Business Media

    Dr Akrajas Ali Umar

  109. (001) faceted-Ga-TiO2 microtablet synthesis and its organic perovskite sensitized solar cells characterization

    Article • Journal of Alloys and Compounds, July 2016, Elsevier

    Dr Akrajas Ali Umar

  110. Synthesis of defect-rich, (001) faceted-ZnO nanorod on a FTO substrate as efficient photocatalysts for dehydrogenation of isopropanol to acetone

    Article • Journal of Physics and Chemistry of Solids, June 2016, Elsevier

    Dr Akrajas Ali Umar

  111. Composition dependence of photoluminescence properties of poly(9,9-di- n -hexylfluorenyl-2,7-diyl) with perovskite-structured SrTiO 3 nanocomposites

    Article • Superlattices and Microstructures, May 2016, Elsevier

    Dr Akrajas Ali Umar

  112. Microwave-assisted hydrolysis preparation of highly crystalline ZnO nanorod array for room temperature photoluminescence-based CO gas sensor

    Article • Sensors and Actuators B Chemical, May 2016, Elsevier

    Dr Akrajas Ali Umar, Chun Hui Tan, Ph.D.

  113. Boron doped ZnO films for dye-sensitized solar cell (DSSC): effect of annealing temperature

    Article • Journal of Materials Science Materials in Electronics, April 2016, Springer Science + Business Media

    Dr Akrajas Ali Umar

  114. Electroluminescence Enhancement of Polymer Light Emitting Diodes Through Surface Plasmons by Ag Nanoplates

    Article • Acta Physica Polonica A, April 2016, Institute of Physics, Polish Academy of Sciences

    Dr Akrajas Ali Umar

  115. Fabrication and Characterization of PANI-Ag-Co Nanocomposite Thin Films as Microbial Sensor for E. coli Detection

    Article • Materials Science Forum, March 2016, Trans Tech Publications

    Dr Akrajas Ali Umar

  116. Efficient quantum capacitance enhancement in DSSC by gold nanoparticles plasmonic effect

    Article • Electrochimica Acta, March 2016, Elsevier

    Dr Akrajas Ali Umar

  117. Enhanced thermoelectric properties of bismuth telluride–organic hybrid films via graphene doping

    Article • Applied Physics A, February 2016, Springer Science + Business Media

    Dr Akrajas Ali Umar

  118. Porous (001)-faceted anatase TiO2nanorice thin film for efficient dye-sensitized solar cell

    Article • EPJ Photovoltaics, January 2016, EDP Sciences

    Dr Akrajas Ali Umar

  119. Characterization and Fabrication of Nanocomposite Thin Films of PANI Embedded with Ag-Mn Alloy for E. coli Sensor

    Article • Materials Today Proceedings, January 2016, Elsevier

    Dr Akrajas Ali Umar

  120. Effect of growth solution concentration on the performance of gallium doped ZnO nanostructures dye sensitized solar cells (DSSCs)

    Article • January 2016, American Institute of Physics

    Dr Akrajas Ali Umar

  121. Fibrous AuPt bimetallic nanocatalyst with enhanced catalytic performance

    Article • RSC Advances, January 2016, Royal Society of Chemistry

    Dr Akrajas Ali Umar

  122. Room temperature photoluminescence properties of ZnO nanorods grown by hydrothermal reaction

    Article • January 2016, American Institute of Physics

    Dr Akrajas Ali Umar

  123. Synthesis of crystalline perovskite-structured SrTiO3 nanoparticles using an alkali hydrothermal process

    Article • International Journal of Minerals Metallurgy and Materials, January 2016, Springer Science + Business Media

    Dr Akrajas Ali Umar

  124. Effect of ZnO growth time on the performance of dye-sensitized solar cell utilizing TiO 2 –ZnO core–shell nanograss hetero-structure

    Article • Materials Letters, December 2015, Elsevier

    Dr Akrajas Ali Umar

  125. Effect of dimethyl borate composition on the performance of boron doped ZnO dye-sensitized solar cell (DSSC)

    Article • Journal of Materials Science Materials in Electronics, November 2015, Springer Science + Business Media

    Dr Akrajas Ali Umar

  126. (001)-Faceted hexagonal ZnO nanoplate thin film synthesis and the heterogeneous catalytic reduction of 4-nitrophenol characterization

    Article • Journal of Alloys and Compounds, November 2015, Elsevier

    Dr Akrajas Ali Umar

  127. Effect of boric acid composition on the properties of ZnO thin film nanotubes and the performance of dye-sensitized solar cell (DSSC)

    Article • Journal of Alloys and Compounds, November 2015, Elsevier

    Dr Akrajas Ali Umar

  128. Porous Zn-doped TiO2 nanowall photoanode: Effect of Zn2+ concentration on the dye-sensitized solar cell performance

    Article • Applied Surface Science, October 2015, Elsevier

    Dr Akrajas Ali Umar

  129. Self-Assembly of High Density of Triangular Silver Nanoplate Films Promoted by 3-Aminopropyltrimethoxysilane

    Article • Applied Sciences, July 2015, MDPI AG

    Dr Akrajas Ali Umar

  130. Effect of molar ratio of zinc nitrate: hexamethylenetetramine on the properties of ZnO thin film nanotubes and nanorods and the performance of dye-sensitized solar cell (DSSC)

    Article • Journal of Materials Science Materials in Electronics, July 2015, Springer Science + Business Media

    Dr Akrajas Ali Umar

  131. Influence of optical band gap and particle size on the catalytic properties of Sm/SnO2–TiO2 nanoparticles

    Article • Superlattices and Microstructures, June 2015, Elsevier

    Dr Akrajas Ali Umar

  132. Synthesis of Amorphous Platinum Nanofibers Directly on an ITO Substrate and Its Heterogeneous Catalytic Hydrogenation Characterization

    Article • ACS Applied Materials & Interfaces, April 2015, American Chemical Society (ACS)

    Dr Akrajas Ali Umar

  133. Synthesis and characterization of TiO2–ZnO core–shell nanograss hetero-structure and its application in dye-sensitized solar cell (DSSC)

    Article • Journal of Materials Science Materials in Electronics, April 2015, Springer Science + Business Media

    Dr Akrajas Ali Umar

  134. Selective Heterogeneous Catalytic Hydrogenation of Ketone (C═O) to Alcohol (OH) by Magnetite Nanoparticles Following Langmuir–Hinshelwood Kinetic Approach

    Article • ACS Applied Materials & Interfaces, March 2015, American Chemical Society (ACS)

    Dr Akrajas Ali Umar

  135. Effect of bismuth telluride concentration on the thermoelectric properties of PEDOT:PSS–glycerol organic films

    Article • Physica E Low-dimensional Systems and Nanostructures, February 2015, Elsevier

    Dr Akrajas Ali Umar

  136. Effect of zinc acetate dihydrate precursor concentration on the properties of TiO 2 –ZnO core–shell nanograss hetero-structure

    Article • Journal of Alloys and Compounds, February 2015, Elsevier

    Dr Akrajas Ali Umar

  137. Effect of growth temperature and time on the ZnO film properties and the performance of dye-sensitized solar cell (DSSC)

    Article • Journal of Solid State Electrochemistry, January 2015, Springer Science + Business Media

    Dr Akrajas Ali Umar

  138. Direct growth of oriented ZnO nanotubes by self-selective etching at lower temperature for photo-electrochemical (PEC) solar cell application

    Article • Journal of Alloys and Compounds, January 2015, Elsevier

    Dr Akrajas Ali Umar

  139. Thermal Annealing Effect on Structural, Morphological, and Sensor Performance of PANI-Ag-Fe Based ElectrochemicalE. coliSensor for Environmental Monitoring

    Article • The Scientific World JOURNAL, January 2015, Hindawi Publishing Corporation

    Dr Akrajas Ali Umar

  140. Fabrication of ZnO Nanorod for Room Temperature NO Gas Sensor

    Article • Advanced Materials Research, October 2014, Trans Tech Publications

    Dr Akrajas Ali Umar, Chun Hui Tan, Ph.D.

  141. Rapid synthesis of TiO2/MWCNTs nanocatalyst with enhanced photocatalytic activity using modified microwave technique

    Article • Materials Science in Semiconductor Processing, September 2014, Elsevier

    Dr Akrajas Ali Umar

  142. Polymer electrolyte for photoelectrochemical cell and dye-sensitized solar cell: a brief review

    Article • Ionics, August 2014, Springer Science + Business Media

    Dr Akrajas Ali Umar

  143. Gold nanoplates as sensing material for plasmonic sensor of formic acid

    Article • August 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Akrajas Ali Umar

  144. Effect of organic dye on the performance of dye-sensitized solar cell utilizing TiO2 nanostructure films synthesized via CTAB-assisted liquid phase deposition technique

    Article • Russian Journal of Electrochemistry, July 2014, Pleiades Publishing Ltd

    Dr Akrajas Ali Umar

  145. Morphological, optical, structural and photoelectrochemical properties of TiO2nanoflower prepared via PVP surfactant assisted liquid phase deposition technique

    Article • Journal of Experimental Nanoscience, July 2014, Taylor & Francis

    Dr Akrajas Ali Umar

  146. Laser stimulated electrooptics in the Ag–ZnO nanorods

    Article • Physica E Low-dimensional Systems and Nanostructures, July 2014, Elsevier

    Dr Akrajas Ali Umar

  147. Ag–ZnO Nanoreactor Grown on FTO Substrate Exhibiting High Heterogeneous Photocatalytic Efficiency

    Article • ACS Combinatorial Science, June 2014, American Chemical Society (ACS)

    Dr Akrajas Ali Umar

  148. Enhancement of 1536nm emission of Er doped ZnO nanopowder by Ag doping

    Article • Optical Materials, June 2014, Elsevier

    Dr Akrajas Ali Umar

  149. Solvent controlled synthesis of CaO-MgO nanocomposites and their application in the photodegradation of organic pollutants of industrial waste

    Article • Russian Journal of Physical Chemistry A, April 2014, Pleiades Publishing Ltd

    Dr Akrajas Ali Umar

  150. Morphology, structure, optical property and photoelectrochemical property of TiO2 nanoflower films synthesised via liquid phase deposition technique

    Article • Micro & Nano Letters, April 2014, the Institution of Engineering and Technology (the IET)

    Dr Akrajas Ali Umar

  151. Localized Surface Plasmon Resonance Sensor of Gold Nanoplates for Detection of Boric Acid

    Article • Key Engineering Materials, April 2014, Trans Tech Publications

    Dr Akrajas Ali Umar

  152. Synthesis of ZnO Nanorod Arrays by Chemical Solution and Microwave Method for Sensor Application

    Article • Key Engineering Materials, April 2014, Trans Tech Publications

    Dr Akrajas Ali Umar

  153. Effect of hexamethylenetetramines (HMT) surfactant concentration on the performance of TiO2 nanostructure photoelectrochemical cells

    Article • Russian Journal of Electrochemistry, March 2014, Pleiades Publishing Ltd

    Dr Akrajas Ali Umar

  154. Poriferous microtablet of anatase TiO2 growth on an ITO surface for high-efficiency dye-sensitized solar cells

    Article • Solar Energy Materials and Solar Cells, March 2014, Elsevier

    Dr Akrajas Ali Umar

  155. ZnO nanocubes with (101) basal plane photocatalyst prepared via a low-frequency ultrasonic assisted hydrolysis process

    Article • Ultrasonics Sonochemistry, March 2014, Elsevier

    Dr Akrajas Ali Umar

  156. Highly-reactive AgPt nanofern composed of {001}-faceted nanopyramidal spikes for enhanced heterogeneous photocatalysis application

    Article • Journal of Materials Chemistry A, January 2014, Royal Society of Chemistry

    Dr Akrajas Ali Umar

  157. Porous (001)-faceted Zn-doped anatase TiO2nanowalls and their heterogeneous photocatalytic characterization

    Article • RSC Advances, January 2014, Royal Society of Chemistry

    Dr Akrajas Ali Umar

  158. Photo-polymerization of methacrylate based polymer electrolyte for dye-sensitized solar cell

    Article • Journal of Power Electronics, January 2014, De Gruyter

    Dr Akrajas Ali Umar

  159. Effect of surfactant on the physical properties of ZnO nanorods and the performance of ZnO photoelectrochemical cell

    Article • Journal of Experimental Nanoscience, December 2013, Taylor & Francis

    Dr Akrajas Ali Umar

  160. Ethanol sensor based on ZnO nanostructures prepared via microwave oven

    Article • December 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Akrajas Ali Umar

  161. Visible light photocatalytic activity of TiO2/MWCNTs nanocomposite prepared using modified microwave technique

    Article • December 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Akrajas Ali Umar

  162. Effect of Ammonia and Zinc Acetate Precursor Concentration on the Morphology of ZnO Nanorods and the Performance of a ZnO Photoelectrochemical Cell

    Article • Current Nanoscience, November 2013, Bentham Science Publishers

    Dr Akrajas Ali Umar

  163. Efficient Heterogeneous Catalytic Hydrogenation of Acetone to Isopropanol on Semihollow and Porous Palladium Nanocatalyst

    Article • ACS Applied Materials & Interfaces, September 2013, American Chemical Society (ACS)

    Dr Akrajas Ali Umar

  164. Effect of TiO2 nanostructure's shape on the DSSCs performance

    Article • September 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Akrajas Ali Umar

  165. Formation of gold-coated multilayer graphene via thermal reduction

    Article • Materials Letters, September 2013, Elsevier

    Dr Akrajas Ali Umar

  166. A molybdenum dithiolene complex as a potential photosensitiser for photoelectrochemical cells

    Article • International Journal of Hydrogen Energy, July 2013, Elsevier

    Dr Akrajas Ali Umar

  167. Formation of a Multi-Arm Branched Nanorod of ZnO on the Si Surface via a Nanoseed-Induced Polytypic Crystal Growth Using the Hydrothermal Method

    Article • Science of Advanced Materials, July 2013, American Scientific Publishers

    Dr Akrajas Ali Umar

  168. Solvent Controlled Synthesis of Tin Oxide Nanocatalysts and their Applications in Photodegradation of Environmental Hazardous Materials

    Article • Materials Science Forum, May 2013, Trans Tech Publications

    Dr Akrajas Ali Umar

  169. Preparation and Characterization of TiO2 Nanowire - Cu2O Nanocube Composite Thin Film

    Article • Materials Science Forum, May 2013, Trans Tech Publications

    Dr Akrajas Ali Umar

  170. Synthesis and Characterization of Gold Nanoplates onto Solid Substrates by Seed-Mediated Growth Method

    Article • Materials Science Forum, May 2013, Trans Tech Publications

    Dr Akrajas Ali Umar

  171. Deposition of Au/TiO2 Nanocomposite on ITO Surface by Seed-Mediated Liquid Phase Deposition Method

    Article • Journal of Physics Conference Series, April 2013, Institute of Physics Publishing

    Dr Akrajas Ali Umar

  172. The 3rd ISESCO International Workshop and Conference On Nanotechnology 2012 (IWCN2012)

    Article • Journal of Physics Conference Series, April 2013, Institute of Physics Publishing

    Dr Akrajas Ali Umar

  173. Ultrafast Formation of ZnO Nanorods via Seed-Mediated Microwave Assisted Hydrolysis Process

    Article • Journal of Physics Conference Series, April 2013, Institute of Physics Publishing

    Dr Akrajas Ali Umar

  174. Effect of Gold Nanoparticles Density Grown Directly on the Surface on the Performance of Organic Solar Cell

    Article • Current Nanoscience, April 2013, Bentham Science Publishers

    Dr Akrajas Ali Umar

  175. H+, N+, and Ar+ ion irradiation induced structure changes of carbon nanostructures

    Article • New Carbon Materials, April 2013, Elsevier

    Dr Akrajas Ali Umar

  176. Preparation of grass-like TiO2 nanostructure thin films: Effect of growth temperature

    Article • Applied Surface Science, April 2013, Elsevier

    Dr Akrajas Ali Umar

  177. Microwave Assisted Hydrothermal Method for Porous Zinc Oxide Nanostructured-Films

    Article • Journal of Nanoscience and Nanotechnology, April 2013, American Scientific Publishers

    Dr Akrajas Ali Umar

  178. Localized Surface Plasmon Resonance Sensor Using Gold Nanoparticles for Detection of Bisphenol A

    Article • Key Engineering Materials, March 2013, Trans Tech Publications

    Dr Akrajas Ali Umar

  179. Fibrous nanocube of platinum

    Article • RSC Advances, January 2013, Royal Society of Chemistry

    Dr Akrajas Ali Umar

  180. Effect of organic dye, the concentration and dipping time of the organic dye N719 on the photovoltaic performance of dye-sensitized ZnO solar cell prepared by ammonia-assisted hydrolysis technique

    Article • Electrochimica Acta, January 2013, Elsevier

    Dr Akrajas Ali Umar

  181. Modified microwave method for the synthesis of visible light-responsive TiO2/MWCNTs nanocatalysts

    Article • Nanoscale Research Letters, January 2013, Springer Science + Business Media

    Dr Akrajas Ali Umar

  182. Preparation of patterned graphene-ZnO hybrid nanoflower and nanorods on ITO surface

    Article • January 2013, American Institute of Physics

    Dr Akrajas Ali Umar

  183. Synthesis of silver nanosheets onto solid substrates by using seed-mediated growth method

    Article • January 2013, American Institute of Physics

    Dr Akrajas Ali Umar

  184. Effect of ZnO Nanoseed Structure on the Growth Orientation of Vertical Array ZnO Nanorods via Hydrothermal Process

    Article • Applied Mechanics and Materials, November 2012, Trans Tech Publications

    Dr Akrajas Ali Umar

  185. High sensitivity localized surface plasmon resonance sensor of gold nanoparticles: Surface density effect for detection of boric acid

    Article • September 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Akrajas Ali Umar

  186. Localized Surface Plasmon Resonance sensor of Gold Nanoparticles for detection pesticides in water

    Article • September 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Akrajas Ali Umar

  187. The effects of mixed electroluminescent (EL) polymer layer thickness on the single layer organic light emitting diode (OLED) performance

    Article • September 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Akrajas Ali Umar

  188. Effect of TiO2 nanostructure morphology on the performance of a photoelectrochemical cell of ITO/TiO2/electrolyte/platinum

    Article • Journal of Solid State Electrochemistry, August 2012, Springer Science + Business Media

    Dr Akrajas Ali Umar

  189. Detection of Formaldehyde in Water: A Shape-Effect on the Plasmonic Sensing Properties of the Gold Nanoparticles

    Article • Sensors, July 2012, MDPI AG

    Dr Akrajas Ali Umar

  190. Silver nanocombs and branched nanowires formation in aqueous binary surfactants solution

    Article • Journal of Nanoparticle Research, July 2012, Springer Science + Business Media

    Dr Akrajas Ali Umar

  191. DEPTH-DEPENDENT TETRAGONAL DISTORTION STUDY OFAlGaNEPILAYER THIN FILM USING RBS AND CHANNELING TECHNIQUE

    Article • Modern Physics Letters B, June 2012, World Scientific Pub Co Pte Lt

    Dr Akrajas Ali Umar

  192. Gold nanonetwork film on the ITO surface exhibiting one-dimensional optical properties

    Article • Nanoscale Research Letters, January 2012, Springer Science + Business Media

    Dr Akrajas Ali Umar

  193. Optimation growth of platinum and palladium nanoparticles on stainless steel 316L and activated carbon pellet substrates

    Article • January 2012, American Institute of Physics

    Dr Akrajas Ali Umar

  194. Effect of optical property of surfactant-treated TiO2 nanostructure on the performance of TiO2 photo-electrochemical cell

    Article • Journal of Solid State Electrochemistry, December 2011, Springer Science + Business Media

    Dr Akrajas Ali Umar

  195. Detection of Formaldehyde Using Plasmonic Properties of Gold Nanoparticles

    Article • Key Engineering Materials, November 2011, Trans Tech Publications

    Dr Akrajas Ali Umar

  196. Optical Electronic Nose Based on Fe (III) Complex of Porphyrins Films for Detection of Volatile Compounds

    Article • Key Engineering Materials, November 2011, Trans Tech Publications

    Dr Akrajas Ali Umar

  197. Growth of platinum nanoparticles on stainless steel 316L current collectors to improve carbon-based supercapacitor performance

    Article • Electrochimica Acta, November 2011, Elsevier

    Dr Akrajas Ali Umar

  198. Characterization of SnO2 Nanoparticles Prepared by Two Different Wet Chemistry Methods

    Article • Advanced Materials Research, October 2011, Trans Tech Publications

    Dr Akrajas Ali Umar

  199. Dressing of Mwcnts with TiO2 Nanoparticles Using Modified Microwave Method

    Article • Advanced Materials Research, October 2011, Trans Tech Publications

    Dr Akrajas Ali Umar

  200. Fabrication of Photoelectrochemical Cell Using Highly Compact Vertical Array ZnO Nanorod

    Article • Advanced Materials Research, October 2011, Trans Tech Publications

    Dr Akrajas Ali Umar

  201. Seed-Mediated Liquid Phase Deposition Method for TiO2 Nanostructure Growth on ITO Substrate: Effect of Surfactant

    Article • Advanced Materials Research, October 2011, Trans Tech Publications

    Dr Akrajas Ali Umar

  202. Study Phase Separation of Donor: Acceptor in Inkjet Printed Thin Films of Bulk Heterojunction Organic Solar Cells Using AFM Phase Imaging

    Article • Advanced Materials Research, October 2011, Trans Tech Publications

    Dr Akrajas Ali Umar

  203. Synthesis of Monodisperse CdSe QDs Using Controlled Growth Temperatures

    Article • Advanced Materials Research, October 2011, Trans Tech Publications

    Dr Akrajas Ali Umar

  204. The Effect of Nanoseed Concentration on the Aspect Ratio of Gold Nanorod

    Article • Advanced Materials Research, October 2011, Trans Tech Publications

    Dr Akrajas Ali Umar

  205. The Optical Properties of Ammonia Treated TiO2 Nanostructure Prepared by Liquid Phase Deposition Method

    Article • Advanced Materials Research, October 2011, Trans Tech Publications

    Dr Akrajas Ali Umar

  206. Fluorescent and nonlinear optical features of CdTe quantum dots

    Article • Journal of Materials Science Materials in Electronics, June 2011, Springer Science + Business Media

    Dr Akrajas Ali Umar

  207. Photoinduced absorption of Ag nanoparticles deposited on ITO substrate

    Article • Journal of Alloys and Compounds, June 2011, Elsevier

    Dr Akrajas Ali Umar

  208. The detection of pesticides in water using ZnCdSe quantum dot films

    Article • Advances in Natural Sciences Nanoscience and Nanotechnology, May 2011, Institute of Physics Publishing

    Dr Akrajas Ali Umar

  209. The effect of solvent on the morphology of an inkjet printed active layer of bulk heterojunction solar cells

    Article • Advances in Natural Sciences Nanoscience and Nanotechnology, March 2011, Institute of Physics Publishing

    Dr Akrajas Ali Umar

  210. Effect of Organic Salt Doping Ratios on the Performance of Poly(9,9-di-n-hexylfluorenyl-2,7-diyl) Organic Light Emitting Diode, OLED

    Article • January 2011, American Institute of Physics

    Dr Akrajas Ali Umar

  211. A simple route to vertical array of quasi-1D ZnO nanofilms on FTO surfaces: 1D-crystal growth of nanoseeds under ammonia-assisted hydrolysis process

    Article • Nanoscale Research Letters, January 2011, Springer Science + Business Media

    Dr Akrajas Ali Umar

  212. Optical features of the gold nanoparticles deposited on ITO substrates

    Article • Optics Communications, January 2011, Elsevier

    Dr Akrajas Ali Umar

  213. Bright Photoluminescence of CdTe Quantum Dots Formed in Phosponic-Oleic Acids Binary Surfactants

    Article • Materials Science Forum, November 2010, Trans Tech Publications

    Dr Akrajas Ali Umar

  214. Fluorescence Gas Sensor Using CdTe Quantum Dots Film to Detect Volatile Organic Compounds

    Article • Materials Science Forum, November 2010, Trans Tech Publications

    Dr Akrajas Ali Umar

  215. Plasmonic Responses of Gold Nanoparticles on Organic Vapor: Shape Effect

    Article • Materials Science Forum, November 2010, Trans Tech Publications

    Dr Akrajas Ali Umar

  216. The Effect of Donor:Acceptor Ratio on the Generated Photocurrent of Inkjet Printed Blended Poly (3-Octylthiophene-2.5-Diyl) and (6,6)-Phenyl C71 Butyric Acid Methyl Ester Bulk Heterojunction Organic Solar Cells

    Article • Materials Science Forum, November 2010, Trans Tech Publications

    Dr Akrajas Ali Umar

  217. Effective electrodeposition of Co–Ni–Cu alloys nanoparticles in the presence of alkyl polyglucoside surfactant

    Article • Applied Surface Science, November 2010, Elsevier

    Dr Akrajas Ali Umar

  218. Formation of Highly Thin, Electron-Transparent Gold Nanoplates from Nanoseeds in Ternary Mixtures of Cetyltrimethylammonium Bromide, Poly(vinyl pyrrolidone), and Poly(ethylene glycol)

    Article • Crystal Growth & Design, August 2010, American Chemical Society (ACS)

    Dr Akrajas Ali Umar

  219. Physical, electrochemical and supercapacitive properties of activated carbon pellets from pre-carbonized rubber wood sawdust by CO2 activation

    Article • Current Applied Physics, July 2010, Elsevier

    Dr Akrajas Ali Umar

  220. Detection of fungicide in water by ZnCdSe quantum dots thin film

    Article • June 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Akrajas Ali Umar

  221. Enhanced-photoluminescence properties of CdTe quantum dots prepared from the ternary surfactant mixture system

    Article • June 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Akrajas Ali Umar

  222. Localized surface plasmon resonance of gold nanoparticle-cytocrome C to detect the presence of nitric oxide gas

    Article • June 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Akrajas Ali Umar

  223. Optimizing of the inkjet printing technique parameters for fabrication of bulk heterojunction organic solar cells

    Article • June 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Akrajas Ali Umar

  224. Fabrication of a nanoparticle TiO2 photoelectrochemical cell utilizing a solid polymeric electrolyte of PAN–PC–LiClO4

    Article • Ionics, May 2010, Springer Science + Business Media

    Dr Akrajas Ali Umar

  225. Effect of ionic conductivity of a PAN–PC–LiClO4 solid polymeric electrolyte on the performance of a TiO2 photoelectrochemical cell

    Article • Journal of Solid State Electrochemistry, March 2010, Springer Science + Business Media

    Dr Akrajas Ali Umar

  226. Facile Approach for Preparing CdSe∕CdTe Heterostucture Quantum Dots

    Article • January 2010, American Institute of Physics

    Dr Akrajas Ali Umar

  227. Facile Approach for Preparing CdSe∕CdTe Heterostucture Quantum Dots

    Article • January 2010, American Institute of Physics

    Dr Akrajas Ali Umar

  228. Fluorescence Properties of Hybrid CdTe Quantum Dots-Porphyrins Thin Films in Organic Vapors

    Article • January 2010, American Institute of Physics

    Dr Akrajas Ali Umar

  229. Effect of Organic Salt Doping on The Performance of Poly(9,9-di-n-hexylfluorenyl-2,7-diyl) Organic Light Emitting Diode, OLED

    Article • January 2010, American Institute of Physics

    Dr Akrajas Ali Umar

  230. Effect of the grain size of nanoparticle dye-coated titanium dioxide on the short-circuit current density and open-circuit voltage of an indium tin oxide/titanium dioxide/poly(acrylonitrile)-propylene carbonate-lithium perchlorate/graphite solar cell

    Article • Journal of Applied Polymer Science, January 2010, Wiley

    Dr Akrajas Ali Umar

  231. The Dependence of Donor:Acceptor Ratio on the Photovoltaic Performances of Blended poly (3-octylthiophene-2,5-diyl) and (6,6)-phenyl C[sub 71] butyric acid methyl ester Bulk Heterojunction Organic Solar Cells

    Article • January 2010, American Institute of Physics

    Dr Akrajas Ali Umar

  232. Highly red luminescence properties from ternary ZnCdTe quantum dots

    Article • July 2009, SPIE

    Dr Akrajas Ali Umar

  233. Formation of High-Yield Gold Nanoplates on the Surface: Effective Two-Dimensional Crystal Growth of Nanoseed in the Presence of Poly(vinylpyrrolidone) and Cetyltrimethylammonium Bromide

    Article • Crystal Growth & Design, June 2009, American Chemical Society (ACS)

    Dr Akrajas Ali Umar

  234. Comparison of spherical nanogold particles and nanogold plates for the oxidation of dopamine and ascorbic acid

    Article • Journal of Electroanalytical Chemistry, June 2009, Elsevier

    Dr Akrajas Ali Umar

  235. Improvement of white organic light emitting diode performances by an annealing process

    Article • Thin Solid Films, June 2009, Elsevier

    Dr Akrajas Ali Umar

  236. Synthesis and characterization of TiO2 nanoparticle films coated with organic dyes

    Article • Physica B Condensed Matter, May 2009, Elsevier

    Dr Akrajas Ali Umar

  237. Electroluminescent from hybrid of Cdse quantum dot-organic light emitting diode

    Article • November 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Akrajas Ali Umar

  238. Fabrication of CdSe quantum dots-PHF organic hybrid light emitting diodes

    Article • November 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Akrajas Ali Umar

  239. Synthesis of CdSe quantum dots: Effect of surfactant on the photoluminescence property

    Article • November 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Akrajas Ali Umar

  240. Non-Linear Optical Effects in Au Nanoparticle-Deposited ZnO Nanocrystalline Films

    Article • Journal of Nano Research, August 2008, Trans Tech Publications

    Dr Akrajas Ali Umar

  241. Synthesis of Palladium Nanobricks with Atomic-Step Defects

    Article • Crystal Growth & Design, June 2008, American Chemical Society (ACS)

    Dr Akrajas Ali Umar

  242. Second order optical effects in Au nanoparticle-deposited ZnO nanocrystallite films

    Article • Nanotechnology, April 2008, Institute of Physics Publishing

    Dr Akrajas Ali Umar

  243. Optical gas sensing selectivity property of ruthenium (II)-metalloporphyrins Langmuir–Blodgett films

    Article • Current Applied Physics, January 2008, Elsevier

    Dr Akrajas Ali Umar

  244. A Seed-Mediated Growth Method for Vertical Array of Single-Crystalline CuO Nanowires on Surfaces

    Article • Crystal Growth & Design, December 2007, American Chemical Society (ACS)

    Dr Akrajas Ali Umar

  245. Determination of methylprednisolone acetate in biological fluids at gold nanoparticles modified ITO electrode

    Article • Journal of Pharmaceutical and Biomedical Analysis, September 2007, Elsevier

    Dr Akrajas Ali Umar

  246. A cast seed-mediated growth method for preparing gold nanoparticle-attached indium tin oxide surfaces

    Article • Applied Surface Science, December 2006, Elsevier

    Dr Akrajas Ali Umar

  247. Attachment of gold nanoparticles onto indium tin oxide surfaces controlled by adding citrate ions in a seed-mediated growth method

    Article • Applied Surface Science, December 2006, Elsevier

    Dr Akrajas Ali Umar

  248. Pump-dependent luminescence in the Ag nanoparticles doped by Erbium

    Article • Applied Surface Science, November 2006, Elsevier

    Dr Akrajas Ali Umar

  249. Formation of Gold Nanoplates on Indium Tin Oxide Surface:  Two-Dimensional Crystal Growth from Gold Nanoseed Particles in the Presence of Poly(vinylpyrrolidone)

    Article • Crystal Growth & Design, April 2006, American Chemical Society (ACS)

    Dr Akrajas Ali Umar

  250. An original planar multireflection system for sensing using the local surface plasmon resonance of gold nanospheres

    Article • Journal of Optics A Pure and Applied Optics, February 2006, Institute of Physics Publishing

    Dr Akrajas Ali Umar

  251. Circular acoustogyration effect on gold nanoparticles grown on indium tin oxide

    Article • Applied Optics, November 2005, Optical Society of America (OSA)

    Dr Akrajas Ali Umar

  252. Control of the plasmon absorption of gold nanoparticles with a two-color excitation

    Article • Journal of Applied Physics, October 2005, American Institute of Physics

    Dr Akrajas Ali Umar

  253. Nonlinear optical properties of Au nanoparticles on indium–tin oxide substrate

    Article • Nanotechnology, July 2005, Institute of Physics Publishing

    Dr Akrajas Ali Umar

  254. Acoustical circularly polarized gyration in the Au nanoparticles on the ITO

    Article • Physica E Low-dimensional Systems and Nanostructures, July 2005, Elsevier

    Dr Akrajas Ali Umar

  255. Self-assembly layer of amino fluorenone derivative as optical receptor to detect cyclohexane vapour

    Article • July 2005, SPIE

    Dr Akrajas Ali Umar

  256. Circularly polarized light-induced electrogyration in the Au nanoparticles on the ITO

    Article • Physica E Low-dimensional Systems and Nanostructures, May 2005, Elsevier

    Dr Akrajas Ali Umar

  257. Growth of High-Density Gold Nanoparticles on an Indium Tin Oxide Surface Prepared Using a “Touch” Seed-Mediated Growth Technique

    Article • Crystal Growth & Design, March 2005, American Chemical Society (ACS)

    Dr Akrajas Ali Umar

  258. Influence of surface microstructure on optical response of ruthenium-porphyrins thin films gas sensor

    Article • The European Physical Journal Applied Physics, December 2004, EDP Sciences

    Dr Akrajas Ali Umar

  259. Self-assembled monolayer of copper(II) meso-tetra(4-sulfanatophenyl) porphyrin as an optical gas sensor

    Article • Sensors and Actuators B Chemical, June 2004, Elsevier

    Dr Akrajas Ali Umar

  260. Quartz crystal microbalance coated with poly-L-proline self-assembly layer to detect organic gases

    Article • April 2004, SPIE

    Dr Akrajas Ali Umar

  261. Optical sensing of capsicum aroma using four porphyrins derivatives thin films

    Article • Thin Solid Films, September 2002, Elsevier

    Dr Akrajas Ali Umar

  262. Enriching the selectivity of metalloporphyrins chemical sensors by means of optical technique

    Article • Sensors and Actuators B Chemical, July 2002, Elsevier

    Dr Akrajas Ali Umar

  263. Recent Advances in Metal Nanoparticle-Attached Electrodes

    Article • Wiley

    Dr Akrajas Ali Umar

  264. Metalloporphyrins thin films as optical receptors for organic gases

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Akrajas Ali Umar