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Issue 1, 2012
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An isoindigo and dithieno[3,2-b:2′,3′-d]silole copolymer for polymer solar cells

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Abstract

The copolymer of isoindigo and dithieno[3,2-b:2′,3′-d]silole, P(iI-DTS), is reported as prepared by Stille coupling to yield a soluble high molecular weight material absorbing light throughout the visible spectrum up to 800 nm. With deep HOMO and LUMO energy levels (high ionization potential and electron affinity) electrochemically measured at −5.55 and −3.95 eV respectively, this new p-type polymer enabled the fabrication of high open circuit voltage polymer solar cells when blended with fullerene derivatives. By employing solvent additives, the morphology of the devices was optimized to yield power conversion efficiencies of 4%.

Graphical abstract: An isoindigo and dithieno[3,2-b:2′,3′-d]silole copolymer for polymer solar cells

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Supplementary files

Article information


Submitted
08 Sep 2011
Accepted
12 Oct 2011
First published
27 Oct 2011

Polym. Chem., 2012,3, 89-92
Article type
Communication

An isoindigo and dithieno[3,2-b:2′,3′-d]silole copolymer for polymer solar cells

R. Stalder, C. Grand, J. Subbiah, F. So and J. R. Reynolds, Polym. Chem., 2012, 3, 89
DOI: 10.1039/C1PY00402F

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