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Macromol Rapid Commun. 2012 Oct 1. doi: 10.1002/marc.201200414. [Epub ahead of print]

Polymer Photovoltaic Cells Based on Polymethacrylate Bearing Semiconducting Side Chains.

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  • 1College of Chemistry, Beijing Normal University, Xin Jie Kou Wai Street No. 19, Beijing 100875, P. R. China.

Abstract

Polymethacrylate with semiconducting side chains (P1), synthesized by free radical polymerization, was used as a donor material for polymer solar cells. P1 is of high molecular weight (M(n) = 82 kg mol(-1) ), good thermal stability, narrow band gap (1.87 eV), and low-lying HOMO energy level (-5.24 eV). P1 possesses not only the good film-forming ability of polymers but also the high purity of small organic molecules. Power conversion efficiencies (PCEs) of 0.63% and 1.22% have been obtained for solar cells with M1:PC(71) BM and P1:PC(71) BM as the active layers, respectively. With PC(61) BM as the acceptor, PCEs of M1 and P1 based devices decrease to 0.61% and 0.76%, respectively. To the best of our knowledge, this is the first report that free radical polymerization can be used to prepare polymer donors for photovoltaic applications.

Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

PMID:
23023517
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