Absorption Bands of Electrochemically-Colored Films of WO3, MoO3 and MocW1-cO3
- 1 December 1984
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 23 (12R), 1624-1627
- https://doi.org/10.1143/jjap.23.1624
Abstract
Optical absorption bands of electrochemically-colored films of amorphous WO3, MoO3 and Mo c W1-c O3 were investigated. The peak photon energy of the bands depends not only on the amount of injected charges but also on the Mo content. In the WO3 films, the absorption band originates from the intervalence trasfer of electrons. In MoO3 and mixed films, however, the absorption bands are considered to consist of two different components. The first is the intervalence trasfer band and the second is a component of absorption at higher energies. The second component is considered to be related to Mo atoms. The area under the absorption curve increases linearly with increasing density of injected charges in the WO3 film. In the film with large c, the absorption tends to saturate.Keywords
This publication has 8 references indexed in Scilit:
- Optical Characteristics of WO 3 Electrochromic Cells under Heavy Li Ion InjectionJournal of the Electrochemical Society, 1982
- Fundamental absorption edge of evaporated amorphous WO3 filmsApplied Physics B Laser and Optics, 1981
- Electron diffusion and electrochromism in MoO3 amorphous filmsJournal of Applied Physics, 1980
- Optical properties of mixed-oxide WO3/MoO3 electrochromic filmsApplied Physics Letters, 1977
- Dependence of WO 3 Electrochromic Absorption on CrystallinityJournal of the Electrochemical Society, 1977
- Optical and photoelectric properties and colour centres in thin films of tungsten oxidePhilosophical Magazine, 1973
- Optical Properties and Color-Center Formation in Thin Films of Molybdenum TrioxideJournal of Applied Physics, 1966
- Absorption of Light by Atoms in SolidsPhysical Review B, 1956