Synthesis and Photovoltaic Properties of D-A Copolymers Based on Dithienosilole and Benzotriazole

被引：92

作者：

Min, Jie ^{[1
]}

Zhang, Zhi-Guo ^{[1
]}

Zhang, Siyuan ^{[1
]}

Zhang, Maojie ^{[1
]}

Zhang, Jing ^{[1
]}

Li, Yongfang ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

来源：

MACROMOLECULES | 2011年 / 44卷 / 19期

关键词：

ACCEPTOR GROUPS SYNTHESIS; CONJUGATED SIDE-CHAIN; POLYMER SOLAR-CELLS; PERFORMANCE; THIAZOLOTHIAZOLE; TRIPHENYLAMINE; CARBAZOLE;

D O I：

10.1021/ma201673m

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 new donor-acceptor (D-A) copolymers containing dithienosilole (DTS) donor unit and benzotriazole (BTA) acceptor unit without and with thiophene bridge, PDTS-BTA and PDTS-DTBTA, were synthesized to study their structure-property relationships for the application in polymer solar cells (PSCs). Compared to PDTS-BTA, adding thiophene bridges in PDTS-DTBTA improves planarity and increases effective conjugation of the polymer main chain, which translated into broader and stronger absorption, higher hole mobility, and better photovoltaic performance. Under the illumination of AM1.5G, 100 mW/cm(2), the PSC based on PDTS-DTBTA/PC70BM demonstrated a power conversion efficiency of 3.80%, which is significantly improved in comparison with that (1.64%) of the device based on PDTS-BTA/PC70BM under the same experimental conditions.

引用

页码：7632 / 7638

页数：7

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