Solid State Photoelectrochemical Cells Based on Dye Sensitization

Research output: Contribution to conferencePaper

Abstract

The initial efficiency of dye sensitized heterojunctions (DSHs) made from n-TiO2, various ruthenium polypyridyl dyes, and p-CuSCN is quite poor. The efficiency increases dramatically when the DSH is exposed to moderate levels of UV illumination. The UV illumination excites electron hole pairs in the TiO2. The hole moves to the surface and oxidizes some species present at the interface. The rateof the UV enhancement is controlled by the light intensity, the potential, and the TiO2 thickness. After sufficient UV illumination the efficiency increase is permanent. Possible mechanisms are discussed.
Original languageAmerican English
Pages129-136
Number of pages8
StatePublished - 1997
EventFuture Generation Photovoltaic Technologies: First NREL Conference - Denver, Colorado
Duration: 22 Mar 199726 Mar 1997

Conference

ConferenceFuture Generation Photovoltaic Technologies: First NREL Conference
CityDenver, Colorado
Period22/03/9726/03/97

Bibliographical note

Work performed by University of Washington, Seattle, Washington

NREL Publication Number

  • NREL/CP-520-24467

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