Rhodanine flanked indacenodithiophene as non-fullerene acceptor for efficient polymer solar cells

被引：0

作者：

Boyu Jia ^{[1
]}

Yao Wu ^{[1
]}

Fuwen Zhao ^{[2
]}

Cenqi Yan ^{[1
]}

Siya Zhu ^{[1
]}

Pei Cheng ^{[2
]}

Jiangquan Mai ^{[3
]}

TszKi Lau ^{[3
]}

Xinhui Lu ^{[3
]}

ChunJen Su ^{[4
]}

Chunm Wang ^{[2
]}

Xiaowei Zhan ^{[1
]}

机构：

[1] Key Laboratory of Polymer Chemistry and Physics of Ministry of Education,Department of Materials Science and Engineering,College of Engineering,Peking University

[2] Institute of Chemistry,Chinese Academy of Sciences

[3] Department of Physics,Chinese University of Hong Kong

[4] National Synchrotron Radiation Research Center

来源：

Science China(Chemistry). | 2017年 / 60卷 / 02期

关键词：

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A fused-ring electron acceptor IDT-2BR1 based on indacenodithiophene core with hexyl side-chains flanked by benzothiadiazole rhodanine was designed and synthesized.In comparison with its counterpart with hexylphenyl side-chains（IDT-2BR）,IDT-2BR1exhibits higher highest occupied molecular orbital（HOMO）energy but similar lowest unoccupied molecular orbital（LUMO）energy（IDT-2BR1:HOMO=-5.37eV,LUMO=-3.67eV;IDT-2BR:HOMO=-5.52eV,LUMO=-3.69eV）,red-shifted absorption and narrower bandgap.IDT-2BR1 has higher electron mobility(2.2×10-3cm2 V-1s-1)than IDT-2BR(3.4×10-4cm2 V-1s-1)due to the reduced steric hindrance and ordered molecular packing.Fullerene-free organic solar cells based on PTB7-Th:IDT-2BRl yield power conversion efficiencies up to 8.7%,higher than that of PTB7-Th:IDT-2BR（7.7%）,with a high open circuit voltage of0.95 V and good device stability.

引用

页数：7

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