Issue 11, 2011

A dendronised polymer for bulk heterojunction solar cells

Abstract

A Gilch polymerisation was used to form a high molecular weight poly[1,4-phenylenevinylene] with pendent first generation biphenyl dendrons attached to every monomer unit of the backbone. The attachment of the bulky side-chain was found not to disrupt the conjugation of the polymer backbone and the polymer formed an ordered intramolecular structure in the solid-state. Bulk heterojunction (BHJ) organic solar cells were manufactured by blending the polymer at different ratios with [6,6]-phenyl-C61-butyric acid methyl ester (PCBM). Under AM1.5 testing conditions the device with the polymer:PCBM ratio 1 : 3 by weight was found to have an optimum Voc = 0.86 V, Jsc = 1.4 mA cm−2, FF = 37% and PCE of 0.44%, with the PCE 30 times higher than the only other report on a dendronised polymer used in a BHJ device.

Graphical abstract: A dendronised polymer for bulk heterojunction solar cells

Article information

Article type
Paper
Submitted
03 Jul 2011
Accepted
05 Aug 2011
First published
02 Sep 2011

Polym. Chem., 2011,2, 2668-2673

A dendronised polymer for bulk heterojunction solar cells

J. Yu, K. H. Lee, Y. Zhang, M. F. G. Klein, A. Colsmann, U. Lemmer, P. L. Burn, S. Lo and P. Meredith, Polym. Chem., 2011, 2, 2668 DOI: 10.1039/C1PY00301A

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