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Bilayer hybrid solar cells based on triphenylamine-thienylenevinylene dye and TiO2
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry, Physical Chemistry.
University of Angers.
University of Angers.
University of Angers.
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2010 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 114, no 26, 11659-11664 p.Article in journal (Refereed) Published
Abstract [en]

Photoinduced energy conversion from multilayers of organic dye on dense TiO2 films was investigated in bilayer hybrid solar cells. Dye layers of varying thicknesses were prepared by spin-casting the star-shaped dye [tris(dicyano-vinyl-2-thienyl)phenyl]amine (1) from solutions onto dense TiO2 on conducting glass substrates. A spin-cast layer of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and graphite powder was used for contacting the devices. Excitons generated in the dye multilayer contribute to the power conversion efficiency, reaching a maximum of ca. 0.3% at a dye layer thickness of ca. 8 nm for the devices described herein. For dye layers exceeding 5 nm, the cell performance becomes limited by the exciton diffusion length LED and the hole mobility in the organic layer. Using dye multilayers is a viable way to increase light harvesting in solid-state dye-sensitized solar cells.

Place, publisher, year, edition, pages
2010. Vol. 114, no 26, 11659-11664 p.
National Category
Chemical Sciences
Research subject
Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-126540DOI: 10.1021/jp102946zISI: 000279282200047OAI: oai:DiVA.org:uu-126540DiVA: diva2:324690
Available from: 2010-06-16 Created: 2010-06-16 Last updated: 2017-12-12Bibliographically approved

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Unger, EvaJohansson, Erik M. J.Hagfeldt, AndersBoschloo, Gerrit

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