The electrical conductivity and thermopower of films of amorphous tungstic oxide
Authors:
- 1 March 1984
- journal article
- Published by Taylor & Francis in Philosophical Magazine Part B
- Vol. 49 (3) , 219-230
Abstract
This paper briefly describes the preparation of amorphous films of WO3-x ·yH2O. The films were coloured either photo- or thermo-chromically, and the electrical conductivity and thermopower were measured in the temperature range 100 to 500 K. The conductivity [sgrave] could be described by the relationship [sgrave] = [sgrave]0 exp [T/T 0]−¼, and the thermopower S was proportional to T ½. Both transport parameters are consistent with variable range hopping in states above the valence band edge.Keywords
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