Synthesis and photovoltaic behavior of two new alternative donor-acceptor conjugated copolymers containing isoindigo moiety

被引：7
|
作者：
Wu, Fei [1 ,2 ]
Yang, Hongbin [3 ,4 ]
Li, Chang Ming [3 ,4 ,5 ]
Qin, Jingui [1 ,2 ]
机构：
[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China
[2] Wuhan Univ, Hubei Key Lab Organ & Polymer Optoelect Mat, Wuhan 430072, Peoples R China
[3] Nanyang Technol Univ, Sch Chem & Biomed, Singapore 637459, Singapore
[4] Nanyang Technol Univ, Ctr Adv Bionanosyst, Singapore 637459, Singapore
[5] Southwest Univ, Inst Clean Energy & Adv Mat, Chongqing 400715, Peoples R China
来源：
POLYMERS FOR ADVANCED TECHNOLOGIES | 2013年 / 24卷 / 11期
基金：
美国国家科学基金会;
关键词：
D-A copolymers; polymer solar cells; synthesis; isoindigo; BANDGAP; POLYTHIOPHENE;
D O I：
10.1002/pat.3169
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Two donor-acceptor copolymers (P1 and P2) containing isoindigo as the acceptor unit and the benzodithiophene and bisthiophene-dithieno[3,2-b:2,3-d]-pyrrole as the donor unit have been designed and synthesized by the Pd-catalyzed Stille coupling reaction. The copolymers show broad and flat absorption, exhibit good solubility, and thermal stability, but possess optical bandgaps of 1.62 and 1.42eV, respectively, and different donor-acceptor distance, of which the former is shorter than the later. The power conversion efficiency of the polymer solar cells based on P2:PC61BM (1:1 wt%) reached 1.86% with open-circuit voltage of 0.54V and a short-circuit current of 6.36mA/cm(2), under the illumination of AM 1.5, 100mW/cm(2). Copyright (c) 2013 John Wiley & Sons, Ltd.
引用
收藏
页码：945 / 950
页数：6
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