What is it about?
The expression for hopping conductivity obtained from density flux equation clearly shows that the hopping conductivity depends on charge transfer rate and electric permittivity of the medium. By comparing the charge transfer time and disorder drift time, the dynamics of the charge carrier has been studied.
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Why is it important?
We have proposed “Density Flux Model (DFM)” which provides the “hopping conductivity formalism” for disordered molecular solids. This model is in good agreement with Troisi's arguments on the Hall-effect measurement studies carried by Podzorov et al., (see A. Troisi, Chem. Soc. Rev., 2011, 40, 2347–2358).
Perspectives
The dynamic disorder, such as nuclear and electronic degrees of freedom, perturbs the localized charge carrier (dynamic localization) which facilitates the charge carrier flux along the charge transfer path. The time evolution of density flux provides the hopping conductivity which is purely depends on the rate of transition probability and electric permittivity of the medium.
Dr. K. NAVAMANI
KPR Institute of Engineering and Technology
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This page is a summary of: Effect of Structural Fluctuations on Charge Carrier Dynamics in Triazene Based Octupolar Molecules, The Journal of Physical Chemistry C, November 2014, American Chemical Society (ACS),
DOI: 10.1021/jp509450k.
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