Issue 12, 2012
From the journal:

Energy & Environmental Science

Introduction of a conjugated side chain as an effective approach to improving donor–acceptor photovoltaic polymers†

Erjun Zhou,a   Junzi Cong,a   Kazuhito Hashimoto*a  and  Keisuke Tajima*ab  

* Corresponding authors

a Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

b Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan

Abstract

We report a simple, effective approach to modifying two kinds of D–A type polymers; copolymerization with thiophene containing tris(thienylenevinylene) (TTV) conjugated side chain. The resulting copolymers, TTV1 and TTV2, showed significant improvement (25% and 43%) of power conversion efficiency in comparison to the original polymers. The short-circuit current of TTV2 reached 22.6 mA cm−2 that is the highest record for organic photovoltaic devices to date. This design strategy opens up a new possibility to modify the existing D–A type photovoltaic polymers for better performance.

Graphical abstract: Introduction of a conjugated side chain as an effective approach to improving donor–acceptor photovoltaic polymers

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Article information

DOI
https://doi.org/10.1039/C2EE23383E
Article type
Communication
Submitted
06 Sep 2012
Accepted
15 Oct 2012
First published
29 Oct 2012

Energy Environ. Sci., 2012,5, 9756-9759

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Introduction of a conjugated side chain as an effective approach to improving donor–acceptor photovoltaic polymers

E. Zhou, J. Cong, K. Hashimoto and K. Tajima, Energy Environ. Sci., 2012, 5, 9756 DOI: 10.1039/C2EE23383E

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