Abstract
Pristine and surfactant F-127 added tungsten oxide films have been prepared successfully by sol-gel method using PTA as the precursor sol. After annealing at 300°C, amorphous WO3 films with or without F-127 additions were prepared. The F-127-added tungsten oxide films exhibit porous microstructure, which are affected by the amount of F-127 addition. Nanosized microstructure with pore size less than 10nm can be observed with small amount of F-127 addition (less than 0.06g/ml) , where as larger spherical or tubular pores are found with superfluous F-127 addition (higher than 0.08g/ml). Not only the transmittance modulation but also the coloration efficiency can be improved by adding surfactant F-127. Tungsten oxide film with 0.10g/mlF-127 addition exhibits the best electrochromic performance with a transmittance modulation of 67.6% and a coloration efficiency of 38.3cm2C-1.
Original language | English |
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Pages (from-to) | 403-407 |
Number of pages | 5 |
Journal | Surface and Coatings Technology |
Volume | 231 |
DOIs | |
Publication status | Published - Sep 25 2013 |
Keywords
- Electrochromism
- Nanostructured films
- Sol-gel method
- Tungsten oxide films
ASJC Scopus subject areas
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry
- Surfaces, Coatings and Films
- Surfaces and Interfaces