Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 88, Issue 4, Pages 341-350Publisher
ELSEVIER
DOI: 10.1016/j.solmat.2004.11.009
Keywords
dye sensitization; solid-state solar cell; TiO2; SrTiO3; ZnO; SnO2
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Electrodes constructed using nanocrystalline TiO2 particulates for dye-sensitized solid-state solar cells (SS-DSSCs) showed open-circuit voltage (V-oc) in the 500-600 mV range, which is less than the theoretical expected value. Incorporation of high-band-gap semiconducting oxides with a flatband potential higher than TiO2, such as SrTiO3 or ZnO2 results in a dramatic increase in V-oc of SS-DSSC as compared to porous TiO2 nanocrystalline films. The observed photovoltage difference could be correlated to the difference in the flatband potential values of the respective oxides and shift of the flatband potentials of the oxide films. Hence, this method could be used to enhance the Voc and overall cell performance of SS-DSSC. (c) 2004 Elsevier B.V. All rights reserved.
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