The effect of thieno[3,2-b]thiophene on the absorption, charge mobility and photovoltaic performance of diketopyrrolopyrrole-based low bandgap conjugated polymers

被引：40

作者：

Li, Yongxi ^{[1
,2
]}

Chang, Chih-Yu ^{[2
]}

Chen, Yu ^{[1
]}

Song, Yi ^{[1
]}

Li, Chang-Zhi ^{[2
]}

Yip, Hin-Lap ^{[2
]}

Jen, Alex K. -Y. ^{[2
]}

Li, Chao ^{[1
]}

机构：

[1] E China Univ Sci & Technol, Inst Appl Chem, Key Lab Adv Mat, Shanghai 200237, Peoples R China

[2] Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2013年 / 1卷 / 45期

关键词：

ORGANIC SOLAR-CELLS; DONOR-ACCEPTOR COPOLYMERS; SIDE-CHAINS; RATIONAL DESIGN; BENZODITHIOPHENE; PHOTOCURRENT; TRANSISTORS; EFFICIENCY; TRANSPORT; IMPACT;

D O I：

10.1039/c3tc31600a

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of two-dimensional diketopyrrolopyrrole-based low band gap conjugated polymers were synthesized. Replacing thiophene with thieno[3,2-b]thiophene in the side chain and bridge resulted in significant changes to the optical, electrochemical, and morphological properties of the polymers, as well as the subsequent performance of devices made from these materials. The polymer with thieno [3,2-b]thiophene as a bridge instead of a side chain exhibited an increased absorption coefficient and hole mobility, and resulted in the highest power conversion efficiency (5.34%) in this series of polymers. This finding provides valuable insight for the development of more efficient low band-gap polymers.

引用

页码：7526 / 7533

页数：8

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