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Title:
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TiO2 sensitized with an oligo(p-phenylenevinylene) carboxylic acid: a new model compound for a hybrid solar cell
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Author(s):
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Kroon, J.M.; Hal, P.A. van; Wienk, M.M.; Janssen, R.A.J.
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Published by:
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Publication date:
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ECN
Solar Energy
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1-5-2003
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ECN report number:
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Document type:
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ECN-RX--03-028
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Article (scientific)
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Number of pages:
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4
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Published in: Journal of Materials Chemistry (The Royal Society of Chemistry), , 2003, Vol.13, p.1054-1057.
Abstract:
The interaction of an acid-functionalized oligo(p-phenylenevinylene)(OPV3-COOH) with nanocrystalline TiO2 has been studied as a model for
semiconducting polymer?inorganic material hybrid solar cells. Langmuir
adsorption studies show that the monolayer coverage of OPV3-COOH on
nc-TiO2 results in 35% filling of the nanopores. Photoluminescence quenching
and near steady-state photoinduced absorption spectroscopy demonstrate
that an efficient forward photoinduced electron transfer occurs from
OPV3-COOH to TiO2. Photovoltaic cells based on OPV3-COOH/nc-TiO2 and
a liquid electrolyte as a medium for hole transport
provide an incident photon-to-electron conversion efficiency of 55%,
comparable to the values obtained with the best ruthenium dyes, and
show that the majority of the photogenerated charges can be collected.
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