Synthesis, characterization and photovoltaic properties of three new 3,4-dithienyl-substituted polythiophene derivatives

被引：0
|
作者：
Shaojie Chen
Zhiyang Liu
Ziyi Ge
机构：
[1] Ningbo Institute of Materials Technology & Engineering,
[2] Chinese Academy of Sciences,undefined
来源：
Polymer Journal | 2016年 / 48卷
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摘要：
Three 3,4-dithienyl-substituted polythiophene derivatives have been synthesized and characterized. Polymer P2 exhibits the widest light absorption spectrum of the polymers in its polymer chain, which has an alternative donor-acceptor structure. Copolymers blended with 6,6-phenyl-C71-butyric acid methyl ester(PC71BM) as active layers are used to fabricate polymer solar cells (PSCs), and a variety of post-treatments are employed to optimize the PSCs performance. A maximum power conversion efficiency (PCE) of 1.22% is achieved for the conventional configuration device based on P2, and the inverted configuration device of P2 is also prepared for comparison. The results show that the inverted P2 device exhibits a better PCE (1.47%) than that of the conventional device due to the TiO2 nanoparticles and the close energy alignment between the work function of the MoO3 and the HOMO energy levels, which facilitate a light absorption increase and improved charge transport.
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页码：101 / 110
页数：9
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