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Plasmonic organic bulk–heterojunction solar cells based on hydrophobic gold nanorod insertion into active layers
Author(s) -
Liu Zhihai,
Wang Tuntun,
Nanda Sitansu Sekhar,
Yi Dong Kee,
Lee EunCheol
Publication year - 2018
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.45920
Subject(s) - nanorod , plasmon , materials science , active layer , optoelectronics , energy conversion efficiency , heterojunction , organic solar cell , polymer solar cell , plasmonic solar cell , nanotechnology , open circuit voltage , short circuit , solar cell , doping , hybrid solar cell , layer (electronics) , voltage , composite material , polymer , physics , quantum mechanics , thin film transistor
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. Maximum exciton generation rate was increased from 1.35 × 10 −26 to 1.51× 10 −26 m −3 s −1 , and the electron mobility was also increased from 8.6 × 10 −5 to 1.5× 10 −4 cm −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. 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. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 45920.