Electrochromic properties of multi-layer WO3 / TiO2 films made by electrochemical deposition

Tran Thi Thao, Dang Hai Ninh, Nguyen Minh Quyen, Pham Duy Long, Nguyen Nang Dinh

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Published Sep 15, 2011

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THAO, Tran Thi et al. Electrochromic properties of multi-layer WO3 / TiO2 films made by electrochemical deposition. VNU Journal of Science: Mathematics - Physics, [S.l.], v. 27, n. 3, sep. 2011. ISSN 2588-1124. Available at: <https://js.vnu.edu.vn/MaP/article/view/1524>. Date accessed: 22 dec. 2024.
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Issue
Vol 27 No 3
Section
Review Article

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Abstract

Abstract: Multilayer thin films of WO3/TiO2/FTO containning inorganic heterojunctions such as TiO2/FTO and WO3/TiO2 were prepared by electro-chemical deposition technique. From the cyclic voltammetry (CV) characteristics one can suggest that in the WO3/TiO2/FTO multi-layer films there is also W-doped TiO2 structure, creating multi-heterojunctions of  WO3, TiO2:W, TiO2 and F-doped SnO2. Combining CV, time-current characteristic, in-situ transmittance spectra, the electrochromic performance of WO3/TiO2/FTO was revealed. It is seen that the multi-layer electrochromic devices exhibited much larger electrochromic efficiency and faster response time than that of a standard single layer electrochromic device.

Keywords: Electrochromic device (ECD), Electrochemical deposition, in-situ transmittance spectra, ion insertion / extraction, heterojunction.

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