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Comparison of dimethyl sulfoxide treated highly conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) electrodes for use in indium tin oxide-free organic electronic photovoltaic devices
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Unsworth, Natalie Kate, Hancox, Ian, Argent Dearden, Chloe, Sullivan, Paul J., Walker, Marc, Lilley, R. S., Sharp, J. and Jones, T. S. (Tim S.) (2014) Comparison of dimethyl sulfoxide treated highly conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) electrodes for use in indium tin oxide-free organic electronic photovoltaic devices. Organic Electronics, Volume 15 (Number 10). pp. 2624-2631. doi:10.1016/j.orgel.2014.07.015 ISSN 1566-1199.
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Official URL: http://dx.doi.org/10.1016/j.orgel.2014.07.015
Abstract
Indium tin oxide (ITO)-free organic photovoltaic (OPV) devices were fabricated using highly conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) as the transparent conductive electrode (TCE). The intrinsic conductivity of the PEDOT:PSS films was improved by two different dimethyl sulfoxide (DMSO) treatments – (i) DMSO was added directly to the PEDOT:PSS solution (PEDOT:PSSADD) and (ii) a pre-formed PEDOT:PSS film was immersed in DMSO (PEDOT:PSSIMM). X-ray photoelectron spectroscopy (XPS) and conductive atomic force microscopy (CAFM) studies showed a large amount of PSS was removed from the PEDOT:PSSIMM electrode surface. OPV devices based on a poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) bulk hetrojunction showed that the PEDOT:PSSIMM electrode out-performed the PEDOT:PSSADD electrode, primarily due to an increase in short circuit current density from 6.62 mA cm−2 to 7.15 mA cm−2. The results highlight the importance of optimising the treatment of PEDOT:PSS electrodes and demonstrate their potential as an alternative TCE for rapid processing and low-cost OPV and other organic electronic devices.
Item Type: | Journal Article | ||||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||||||||
Library of Congress Subject Headings (LCSH): | Organic electronics, Photovoltaic cells, Dimethyl sulfoxide | ||||||||||
Journal or Publication Title: | Organic Electronics | ||||||||||
Publisher: | Elsevier BV | ||||||||||
ISSN: | 1566-1199 | ||||||||||
Official Date: | October 2014 | ||||||||||
Dates: |
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Volume: | Volume 15 | ||||||||||
Number: | Number 10 | ||||||||||
Page Range: | pp. 2624-2631 | ||||||||||
DOI: | 10.1016/j.orgel.2014.07.015 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||
Date of first compliant deposit: | 27 December 2015 | ||||||||||
Date of first compliant Open Access: | 27 December 2015 | ||||||||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC), Paintbox Limited, Birmingham Science City, Advantage West Midlands (AWM), European Regional Development Fund (ERDF) | ||||||||||
Grant number: | EP/P50578X1 (EPSRC), EP/H021388/1 (EPSRC) |
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