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The effect of UV-irradiation (under short-circuit condition) on dye-sensitized solar cells sensitized with a Ru-complex dye functionalized with a (diphenylamino)styryl-thiophen group
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- Nonomura, Kazuteru (author)
- KTH,Molekylär elektronik, CMD
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- Xu, Yunhua (author)
- KTH,Molekylär elektronik, CMD
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- Marinado, Tannia (author)
- KTH,Molekylär elektronik, CMD
- show more...
- Zhang, Rong (author)
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- (creator_code:org_t)
- Hindawi Limited, 2009
- 2009
- English.
- In: International Journal of Photoenergy (Online). - : Hindawi Limited. - 1110-662X .- 1687-529X. ; :471828
- Journal article (peer-reviewed)
Abstract
Subject headings
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- A new ruthenium complex, cis-di(thiocyanato)(2,2'-bipyridine-4,4'-dicarboxylic acid)(4,4'-bis(2-(5-(2-(4-diphenylaminophenyl) ethenyl)-thiophen-2-yl)ethenyl)-2,2'-bipyridine)ruthenium(II) (named E322) has been synthesized for use in dye-sensitized solar cells (DSCs). Higher extinction coeff. and a broader absorption compared to the std. Ru-dye, N719, were aimed. DSCs were fabricated with E322, and the efficiency was 0.12% initially (4.06% for N719, as ref.). The efficiency was enhanced to 1.83% by exposing the cell under simulated sunlight contg. UV-irradn. at short-circuit condition. The reasons of this enhancement are (1) enhanceing electron injection from sensitizer to TiO2 following a shift toward pos. potentials of the conduction band of TiO2 by the adsorption of protons or cations from the sensitizer, or from the redox electrolyte and (2) improving the regeneration reaction of the oxidized dye by the redox electrolyte by the dissoln. of aggregated dye from the surface of TiO2 following the treatment.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- Chemistry
- Kemi
- Fysikalisk kemi
- Physical Chemistry
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Sun, Licheng
- Hagfeldt, Anders
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- Uppsala University
- Royal Institute of Technology
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