Low band gap dithienogermolodithiophene copolymers with tunable acceptors and side-chains for organic solar cells

被引：28

作者：

Zhong, Hongliang ^{[1
,2
]}

Li, Zhe ^{[1
,2
]}

Buchaca-Domingo, Ester ^{[2
,3
]}

Rossbauer, Stephan ^{[2
,4
]}

Watkins, Scott E. ^{[5
]}

Stingelin, Natalie ^{[2
,3
]}

Anthopoulos, Thomas D. ^{[2
,4
]}

Heeney, Martin ^{[1
,2
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AZ, England

[2] Univ London Imperial Coll Sci Technol & Med, Ctr Plast Elect, London SW7 2AZ, England

[3] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England

[4] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England

[5] CSIRO, Mol & Hlth Technol, Melbourne, Vic 3169, Australia

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2013年 / 1卷 / 47期

基金：

英国工程与自然科学研究理事会;

关键词：

CONJUGATED POLYMERS; RATIONAL DESIGN; PERFORMANCE; EFFICIENT; TRANSISTORS;

D O I：

10.1039/c3ta13778c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the synthesis and characterisation of five new donor-acceptor type co-polymers based on a fused dithienogermolodithiophene unit for use in photovoltaic devices. The influence of three electron deficient co-monomers, as well as the length and variety of the solubilising side-chains, on the physical and optoelectronic properties of the polymers is reported. The number and variety of alkyl side-chains is found to have a significant impact on the polymer aggregation and film morphology, with larger and more bulky side-chains leading to improved solubility and molecular weight. The influence of these properties upon the performance of bulk heterojunction solar cells is shown.

引用

页码：14973 / 14981

页数：9

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