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Issue 10, 2015
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4H-1,2,6-Thiadiazin-4-one-containing small molecule donors and additive effects on their performance in solution-processed organic solar cells

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Abstract

The optical, electrochemical, morphological and transport properties of a series of thiadiazinone (acceptor) and (thienyl)carbazoles (donor) containing π-extended donor–acceptor–donors (D–A–D) are presented. Systematic variations in the number of the thienyl units, the choice of branched or straight alkyl side chains and the use of a processing additive demonstrate their use as electron donors in bulk heterojunction solar cells blended with fullerene acceptors. The best power conversion efficiency (PCE) of 2.7% is achieved by adding to the D–A–D 3 : fullerene blend a polydimethylsiloxane (PDMS) additive, that improves the morphology and doubles the hole mobility within the D–A–D : fullerene blend.

Graphical abstract: 4H-1,2,6-Thiadiazin-4-one-containing small molecule donors and additive effects on their performance in solution-processed organic solar cells

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Supplementary files

Article information


Submitted
22 Dec 2014
Accepted
13 Jan 2015
First published
15 Jan 2015

J. Mater. Chem. C, 2015,3, 2358-2365
Article type
Paper

4H-1,2,6-Thiadiazin-4-one-containing small molecule donors and additive effects on their performance in solution-processed organic solar cells

F. Hermerschmidt, A. S. Kalogirou, J. Min, G. A. Zissimou, S. M. Tuladhar, T. Ameri, H. Faber, G. Itskos, S. A. Choulis, T. D. Anthopoulos, D. D. C. Bradley, J. Nelson, C. J. Brabec and P. A. Koutentis, J. Mater. Chem. C, 2015, 3, 2358
DOI: 10.1039/C4TC02931C

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