Characterization of Proton‐Induced Color Transition in an Amorphous Tungsten Oxide Film
| Autor: | J. G. H. Mathew, H. Rafla‐Yuan, B. P. Hichwa |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Proton
Renewable Energy Sustainability and the Environment business.industry Chemistry Analytical chemistry Molar absorptivity Condensed Matter Physics Microstructure Surfaces Coatings and Films Electronic Optical and Magnetic Materials Amorphous solid Optics Materials Chemistry Electrochemistry Surface roughness Transmittance Thin film business Refractive index |
| Zdroj: | Journal of The Electrochemical Society. 143:2341-2346 |
| ISSN: | 1945-7111 0013-4651 |
| DOI: | 10.1149/1.1837003 |
| Popis: | We investigated proton-induced transmittance modulation in amorphous WO 3.2 films with methods of analysis including varia le angle spectroscopic ellipsometry (VASE) and atomic force microscopy (AFM). We induced optical transition from the clear to the colored state by injecting electrons and protons into the WO 3.2 film. A decrease in the index of refraction, accompanied by an associated increase in the extinction coefficient in the visible range of the spectrum was measured with VASE upon the transition. Physical modulation in terms of a change in the surface morphology was characterized. AFM measurements showed enlargement of a characteristic domed surface structure as the transition took place from the clear to the colored state without significant change in the rms surface roughness value. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|