Issue 14, 2015

Solution-processed boron subphthalocyanine derivatives as acceptors for organic bulk-heterojunction solar cells

Abstract

We report the fabrication of solution-processed bulk heterojunction devices from subphthalocyanine (SubPc) units as the acceptor component and conventional polymeric donor materials such as MEH-PPV, P3HT and PTB7. The high solubility of the SubPc derivatives facilitated the formation of efficient donor/acceptor networks and provided power conversion efficiencies of 0.4% with MEH-PPV, 1.1% with P3HT and 3.5% with PTB7. A clear contribution of photon harvesting by the acceptor was identified from the external quantum efficiency spectra. Analysis of the current–voltage characteristics and photoluminescence quenching revealed trap-assisted and geminate recombination as a loss mechanism. Our results show that solution-processable SubPcs are a promising alternative to fullerenes for polymer solar cells.

Graphical abstract: Solution-processed boron subphthalocyanine derivatives as acceptors for organic bulk-heterojunction solar cells

Supplementary files

Article information

Article type
Paper
Submitted
29 Jan 2015
Accepted
21 Feb 2015
First published
05 Mar 2015
This article is Open Access
Creative Commons BY license

J. Mater. Chem. A, 2015,3, 7345-7352

Author version available

Solution-processed boron subphthalocyanine derivatives as acceptors for organic bulk-heterojunction solar cells

B. Ebenhoch, N. B. A. Prasetya, V. M. Rotello, G. Cooke and I. D. W. Samuel, J. Mater. Chem. A, 2015, 3, 7345 DOI: 10.1039/C5TA00715A

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