Optical and electrochromic properties of sol-gel deposited tungsten oxide films

Esra Ozkan, Se Hee Lee, Ping Liu, C. Ed Tracy, Fatma Z. Tepehan, J. Roland Pitts, Satyen K. Deb

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The electrochromic properties of sol-gel and mesoporous tungsten oxide thin films were investigated. Tungsten oxide films were prepared by a spin coating technique from an ethanolic solution of tungsten hexachloride. A block copolymer (BASF Pluronic p123), (p1) was employed as a template to generate the mesoporous structure. The electrochromic and optical properties such films are described and compared to standard sol-gel tungsten oxide films. A novel ultraviolet (UV) illumination method was developed to remove the polymer templates and was found to improve the coloration efficiency of tungsten oxide in general. All types of films were analyzed by transmission electron microscopy (TEM), atomic force microscopy (AFM), X-ray diffactometry and cyclic voltammetry.

Original languageEnglish
Pages (from-to)175-185
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2001
Externally publishedYes


  • Electrochromism
  • Mesoporous tungsten oxide
  • Sol-gel


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