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Study on Poly(3,4-e...
Study on Poly(3,4-ethylene dioxythiophene)-Poly(styrenesulfonate) as a plastic counter electrode in dye sensitized solar cells
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- Kanciurzewska, Anna (author)
- Linköpings universitet,Tekniska högskolan,Institutionen för teknik och naturvetenskap
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Dobruchowska, E. (author)
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- Baranzahi, Amir (author)
- Linköpings universitet,Tekniska högskolan,Institutionen för teknik och naturvetenskap
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- Carlegrim, Elin (author)
- Linköpings universitet,Tekniska högskolan,Institutionen för teknik och naturvetenskap
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- Fahlman, Mats (author)
- Linköpings universitet,Tekniska högskolan,Ytors Fysik och Kemi
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Girtu, M. A. (author)
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(creator_code:org_t)
- 2007
- 2007
- English.
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In: Journal of Optoelectronics and Advanced Materials. - 1454-4164 .- 1841-7132. ; 9:4, s. 1052-1059
- Related links:
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https://urn.kb.se/re...
Abstract
Subject headings
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- Dye sensitized solar cells with PEDOT-PSS coated directly on flexible polyester substrate as counter electrode have been fabricated. The behavior of such plastic counter electrode in the presence of I/I-3 redox electrolyte has been investigated with X-ray photoelectron spectroscopy. We have found that some of iodine species are "trapped" within the PEDOT-PSS layer. The presence of I-3, I-2 and PEDOT charge transfer complexes with iodine species may block the surface of the electrode. Furthermore, the PEDOT may be further oxidized (p-doped) during cell operation, which in turn may cause overoxidation and loss of conductivity in the PEDOT-PSS film. Additionally, the interactions between PEDOT and iodine species may be enlarged because of the partial loss of PSS protective counter ion. That has resulted in decrease of PEDOT-PSS catalytic activity for reduction of I-3 to I in the redox electrolyte and has caused worse cell performance than in case of DSSC with Pt counter electrode.
Keyword
- dye-sensitized solar cells
- plastic counter electrode
- PEDOT-PSS
- photoelectron spectroscopy
- TECHNOLOGY
- TEKNIKVETENSKAP
Publication and Content Type
- ref (subject category)
- art (subject category)
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