Dependence on Material Choice of Degradation of Organic Solar Cells Following Exposure to Humid Air

Abstract

Electron microscopy has been used to study the degradation of organic solar cells when exposed to humid air. Devices with various different combinations of commonly used organic solar cell hole transport layers and cathode materials have been investigated. In this way the ingress of water and the effect it has on devices could be studied. It was found that calcium and aluminum in the cathode both react with water, causing voids and delamination within the device. The use of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) was found to increase the degradation by easing water ingress into the device. Replacing these materials removed these degradation features.

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Item Type:	Article
Authors/Creators:	Glen, T.S. Scarratt, N.W. Yi, H. Iraqi, A. https://orcid.org/0000-0003-3060-6663 Wang, T. Kingsley, J. Buckley, A.R. Lidzey, D.G. https://orcid.org/0000-0002-8558-1160 Donald, A.M.
Copyright, Publisher and Additional Information:	© 2015 The Authors. Journal of Polymer Science Part B: Polymer Physics published by Wiley Periodicals, Inc. This is an open access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Keywords:	degradation; humidity; organic photovoltaics; TEM; water
Dates:	Published: 15 January 2016 Published (online): 16 September 2015 Accepted: 21 August 2015
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Science (Sheffield) > Department of Chemistry (Sheffield) The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield)
Funding Information:	Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/I028641/1 ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/J017361/1 ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/M014797/1
Depositing User:	Symplectic Sheffield
Date Deposited:	22 Sep 2016 14:48
Last Modified:	22 Sep 2016 14:48
Published Version:	https://dx.doi.org/10.1002/polb.23905
Status:	Published
Publisher:	Wiley
Refereed:	Yes
Identification Number:	10.1002/polb.23905
Related URLs:	Author
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:104985

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Dependence on Material Choice of Degradation of Organic Solar Cells Following Exposure to Humid Air

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