Photointercalation effect of thin WO3 films
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.
- Publication:
-
Applied Physics Letters
- Pub Date:
- September 1990
- DOI:
- 10.1063/1.104231
- Bibcode:
- 1990ApPhL..57.1324N
- Keywords:
-
- Absorption Spectra;
- Amorphous Materials;
- Ceramic Coatings;
- Optoelectronic Devices;
- Thin Films;
- Tungsten Oxides;
- Large Scale Integration;
- Light Modulation;
- Optical Properties;
- Solid-State Physics