Theory of the Color Change of NaxWO3 as a Function of Na-Charge Doping
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
We report theoretical investigations of the coloration of WO{sub 3} upon charge insertion using sodium tungsten bronze (Na{sub x}WO{sub 3}) as a model system. Our results explain well the systematic color change of Na{sub x}WO{sub 3} from dark blue to violet, red-orange, and finally to golden yellow as sodium concentration x increases from 0.3 to unity. Proper accounts for both the interband and the intraband contributions to the optical response are found to be very important for a detailed understanding of the coloration mechanism in this system.
- Research Organization:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1021217
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 79, Issue 20, 2009; Related Information: Article No. 205113
- Country of Publication:
- United States
- Language:
- English
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