Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
80707 | Solar Energy Materials and Solar Cells | 2007 | 5 Pages |
Abstract
In the present investigation, the electrochromic properties of a fast protonic solid state device: NiOx/Ta2O5/WO3−x prepared at room temperature (300 K) is reported. The non-stoichiometric tungsten oxide thin film is prepared by reactive DC magnetron sputtering technique on ITO coated glass; the oxides of tantalum (∼300 nm) and nickel (∼100 nm) are prepared by electron beam evaporation. This proton device has a coloration efficiency of ∼82.4 cm2/C and coloration and bleaching time of 6 and 5 s, respectively, and a transmittance variation of 60%. The work function of WO3−x thin films by Kelvin probe in uncolored and colored states are 4.73 and 4.30 eV, respectively.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
A. Subrahmanyam, C. Suresh Kumar, K. Muthu Karuppasamy,