Photointercalation effect of thin WO3 films
- 24 September 1990
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 57 (13) , 1324-1325
- https://doi.org/10.1063/1.104231
Abstract
It is shown that thin amorphous films of WO3 exhibit a photoinduced reversible coloration in an electrochemical cell of the form quartz/semitransparent Au/ethanol/WO3/In2O3‐coated glass. From measurements of the optical and electrical properties of the films, the coloration is attributed to the formation of HxWO3, presumably due to a photointercalation of protons into WO3 films. This effect is potentially useful for storage, learning, and modulation of two‐dimensional optical information.Keywords
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