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Donor copolymer with benzo[1,2‐b:4,5‐b′]dithiophene and quinoxaline derivative segments for photovoltaic applications
Author(s) -
Gao Zhi,
Qu Bo,
Wu Haimei,
Gao Chao,
Yang Hongsheng,
Zhang Lipei,
Xiao Lixin,
Chen Zhijian,
Gong Qihuang
Publication year - 2014
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.40279
Subject(s) - materials science , copolymer , quinoxaline , polymer chemistry , thermogravimetric analysis , cyclic voltammetry , polymer solar cell , styrene , organic solar cell , energy conversion efficiency , indium tin oxide , polymer , chemistry , organic chemistry , electrode , thin film , nanotechnology , electrochemistry , optoelectronics , composite material
A donor copolymer Poly{2,6‐4,8‐bis(2‐ethylhexyl)benzo[1,2‐b:3,4‐b′]dithiophene‐5,8‐2,3‐bis(5‐octylthiophen‐2‐yl)quinoxaline} (PBDTThQx) with benzo[1,2‐b:4,5‐b′]dithiophene and quinoxaline derivatives was synthesized and characterized with NMR, ultraviolet–visible spectroscopy, thermogravimetric analyses, and cyclic voltammetry. Photovoltaic devices with the configuration indium tin oxide–poly(3,4‐ethylenedioxythiophene)–poly(styrene sulfonate)–PBDTThQx–[6,6]‐phenyl‐C 61 ‐butyric acid methyl ester (PC 61 BM)–LiF–Al were fabricated, in which PBDTThQx performed as the electron donor and PC 61 BM was the electron acceptor in the active layer. The device presented reasonable photovoltaic properties when the weight ratio of PBDTThQx:PC 61 BM reached 1:3. The open‐circuit voltage, fill factor, and power conversion efficiency were gauged to be 0.75 V, 0.59, and 0.74%, respectively. The experimental data implied that PBDTThQx would be a promising donor candidate in the application of polymer solar cells. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 40279.