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ECN publication
TiO2 sensitized with an oligo(p-phenylenevinylene) carboxylic acid: a new model compound for a hybrid solar cell
Kroon, J.M.; Hal, P.A. van; Wienk, M.M.; Janssen, R.A.J.
Published by: Publication date:
ECN Solar Energy 1-5-2003
ECN report number: Document type:
ECN-RX--03-028 Article (scientific)
Number of pages:

Published in: Journal of Materials Chemistry (The Royal Society of Chemistry), , 2003, Vol.13, p.1054-1057.

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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