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Charge Generation in a Dye-Sensitized Solid-State Cell under Different Modes of Illumination

✍ Scribed by P.M. Sirimanne; T. Shirata; T. Soga; T. Jimbo

Publisher: Elsevier Science
Year: 2002
Tongue: English
Weight: 244 KB
Volume: 166
Category: Article
ISSN: 0022-4596
DOI: 10.1006/jssc.2002.9571

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✦ Synopsis

A dye-sensitized solid-state cell was fabricated by sandwiching ruthenium bypridyl complex in between porous TiO 2 and CuI 5lms. Cis-dithiocyanate-bis(2,2-bipyridyl -4-4-dicarboxylate) ruthenium (II) exhibited excellent performance among the dyes tested for TiO 2 "dye"CuI cell. Di4erent mechanisms are proposed for charge generation of the cell under di4erent modes of illumination. A high incident photon to current conversion e7ciency was observed under back wall illumination compared to that of front wall illumination. Dye molecules exhibited a relay e4ect under back wall mode illumination at wavelengths shorter than 400 nm.

2002 Elsevier Science (USA)

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This work was funded by the MOLYCELL European project (OFES 03.0681-1). We thank Ilkay Cesar and Robin Humphry-Baker for valuable discussions and Michel Schaer and Libero Zuppiroli from the Laboratory of Optoelectronics of Molecular Materials at EPFL where some of the measurements were performed.

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