Journal
MATERIALS RESEARCH BULLETIN
Volume 43, Issue 6, Pages 1472-1479Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2007.06.035
Keywords
semiconductors; thin films; oxides; electrochemical properties
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Aerosol pyrolysis (AP) was used for preparing semiconducting films of tungsten trioxide using peroxotungstic acid as a precursor. The films were characterized by SEM, XRD, and by their photoelectrochemical response. Porous, polycrystalline (monoclinic) films of thickness up to 3 mu m were prepared. An incident photon to current efficiency (IPCE) of 0.55 at 365 nm was obtained for films of 1 mu m thickness on conducting F:SnO2/glass substrates under depiction conditions, in junctions with aqueous electrolytes. The spectral (photocurrent) response extended into the visible region (up to 470 nm) which is of importance for solar applications like photocatalysis. (C) 2007 Elsevier Ltd. All rights reserved.
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