Antwi, B.Y., Taylor, R.G.D., Cameron, J. , Owoare, R.B., Kingsford-Adaboh, R. and Skabara, P.J. (2016) Acceptor–donor–acceptor small molecules based on derivatives of 3,4-ethylenedioxythiophene for solution processed organic solar cells. RSC Advances, 6(101), pp. 98797-98803. (doi: 10.1039/C6RA22897F)
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Abstract
Three simple semiconducting acceptor–donor–acceptor (A–D–A) small molecules based on an electron-rich (3,4-ethylenedioxythiophene) EDOT central core have been synthesised (DIN-2TE, DRH-2TE, DECA-2TE) and characterised. Organic photovoltaic (OPV) devices incorporating these materials have been prepared and evaluated. The physical properties of the molecules were characterised by TGA, DSC, UV/vis spectroscopy and cyclic voltammetry. The optical HOMO–LUMO energy gaps of the molecules in the solid state were in the range 1.57–1.82 eV, and in solution 1.88–2.04 eV. Electrochemical HOMO–LUMO energy gaps determined by cyclic voltammetry were found to be in the range 1.97–2.31 eV. The addition of 1% 1,8-diiodooctane (DIO) to photoactive blends of the A–D–A molecules and PC71BM more than doubled the power conversion efficiency (PCE) in the case of DRH-2TE:PC71BM devices to 1.36%.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Cameron, Dr Joseph and Skabara, Professor Peter |
Authors: | Antwi, B.Y., Taylor, R.G.D., Cameron, J., Owoare, R.B., Kingsford-Adaboh, R., and Skabara, P.J. |
College/School: | College of Science and Engineering > School of Chemistry |
Journal Name: | RSC Advances |
Publisher: | Royal Society of Chemistry |
ISSN: | 2046-2069 |
ISSN (Online): | 2046-2069 |
Published Online: | 10 October 2016 |
Copyright Holders: | Copyright © 2016 The Royal Society of Chemistry |
First Published: | First published in RSC Advances 6(101):98797-98803 |
Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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