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Citation: YUAN Jia-Guo, ZHANG Yu-Zhi, LE Jun, SONG Li-Xin, HU Xing-Fang. Spectrum Investigations of Chloro-Alkoxide Sol-Gel Nanostructured Tungsten Oxide Thin Films[J]. Acta Physico-Chimica Sinica, ;2009, 25(02): 267-272. doi: 10.3866/PKU.WHXB20090212 shu

Spectrum Investigations of Chloro-Alkoxide Sol-Gel Nanostructured Tungsten Oxide Thin Films

1.
Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China

Received Date: 4 August 2008
Available Online: 18 November 2008

Vermicular mesoporous nanostructured WO3 thin films were prepared from a chloro-alkoxide sol-gel method via controlled EISA (evaporate induced self-assembly) process using TMDD (HO(EO)xC14(EO)yOH) surfactant as the structure-directing template. This template was eliminated by calcination of 300 ℃. The as-prepared films could be continuous, uniform, and transparent. SEM, TEM, and Raman spectra were used for the nanostructural examinations. Spectrophotometric, XPS, and ellipsometry methods were also introduced to determine the electrochromic behaviors of the nanostructured films. The results showed that the cyclic reversible transmittance modulation range more than 75% has been realized above wavelength of 633 nm, and the electrochromic mechanism of the nanostructured WO3 films exhibited double-inserted absorbing characteristics.
- Nanostructured; WO3; Thin film; Electrochromic
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