Journal
THIN SOLID FILMS
Volume 518, Issue 21, Pages 6107-6112Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2010.05.118
Keywords
Self-assembly; Electrochromic films; Tungsten bronze
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Funding
- National Science Fund of China (NSFC) [30870612]
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Hexagonal tungsten bronze (HTB) nanocrystal and TiO2 nanoparticles were assembled into thin films by layer-by-layer self-assembly method HTB nanocrystals were synthesized by hydrothermal route at 155 degrees C UV-Vis spectra showed that the HTB/TiO2 films exhibit a linear increase in film thickness with assembly exposure steps The electrochromic property of the film was carefully investigated. Cyclic voltammetry indicated that the redox peak was around -05 V The electrochromic contrast, coloration efficiency, switching speed, stability and optical memory were carefully investigated The films vary from white to blue and finally dark brown The electrochromic contrast is 63 9% at 633 nm. The coloration efficiency of the films is relatively high The response time is less than 3 s. (C) 2010 Elsevier B V All rights reserved.
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