Aging effects in n-type semiconducting WO3 films
- 1 October 1983
- journal article
- letter
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 54 (10) , 6061-6064
- https://doi.org/10.1063/1.331756
Abstract
Photocurrent spectra of the polycrystalline, n‐type WO3 film photoanodes are shown to undergo a profound transformation following aging in a photoelectrolysis cell containing an aqueous acidic electrolyte. The observed significant improvement of the photocurrent efficiency of the WO3 photoanodes is assigned to a decrease of the initial defect concentration in the depletion layer, due to electromigration of interstitial W6+ and W5+ ions toward the semiconductor/electrolyte interface. The durable character of this modification of the photoresponse is pointed out.This publication has 10 references indexed in Scilit:
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