What is it about?
In this work, we fabricated plasmonic organic bulk–heterojunction solar cells by inserting hydrophobic gold nanorods (GNRs) into the active layers. Power conversion efficiency was improved from 7.43% to 8.22% because the plasmonic effect of GNRs improved the light harvesting efficiency.
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Why is it important?
Maximum exciton generation rate was increased from 1.35 × 10−26 to 1.51× 10−26m−3 s−1, and the electron mobility was also increased from 8.6 × 10−5 to 1.5× 10−4cm−2 V−1 s−1. As a result, the short circuit current density was improved from 15.5 to 16.7 mA cm−2—the dominant reason for performance enhancement.
Perspectives
The open circuit voltage and fill factor were improved simultaneously. The plasmonic device showed a highest PCE of 8.43%, indicating that doping GNRs into active layers is a simple and effective way to fabricate high-performance organic solar cells.
Dr. Sitansu Sekhar Nanda
Myongji University
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This page is a summary of: Plasmonic organic bulk-heterojunction solar cells based on hydrophobic gold nanorod insertion into active layers, Journal of Applied Polymer Science, October 2017, Wiley,
DOI: 10.1002/app.45920.
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