Sol- Sol doping WO<sub>3</sub> Gasochromic Thin Films withImproved Hydrogen-Sensing Properties

Home > Archive>Volume 47, Issue S2, 2018 >94-98

Sol- Sol doping WO3 Gasochromic Thin Films withImproved Hydrogen-Sensing Properties
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Affiliation:Shanghai Key Laboratory of Special Artificial,Microstructure Materials and Technology,Tongji University,Shanghai Key Laboratory of Special Artificial,Microstructure Materials and Technology,Tongji University,Shanghai Key Laboratory of Special Artificial,Microstructure Materials and Technology,Tongji University,Shanghai Key Laboratory of Special Artificial,Microstructure Materials and Technology,Tongji University,Shanghai Key Laboratory of Special Artificial,Microstructure Materials and Technology,Tongji University,Shanghai Key Laboratory of Special Artificial,Microstructure Materials and Technology,Tongji University
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Fund Project:National Natural Science Foundation of China (51272179)

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Abstract:

WO3-TiO2-SiO2 sol has been prepared for dip coating room-temperature optical hydrogen-sensing thin films. FT-IR, SEM, TEM, AFM, XPS and UV-VIS-NIR spectroscopy have been used to analyze the compound films and its gasochromic properties. Though TiO2 did not doping into the film, it can form WO3 particles during the doping stage in sol. These particles have well spread on the films and improved the roughness of the films. The results of UV-VIS-NIR spectroscopy indicated that TiO2-doped films show better sensitivity than WO3-SiO2 films. The improvement of sensitivity may be assigned to the existence of WO3 particles and high roughness of the films.

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[Wang Haoran, Gao Guohua, Wu Guangming, Zhang Zenghai, Shen Jun, Zhou Bin. Sol- Sol doping WO₃ Gasochromic Thin Films withImproved Hydrogen-Sensing Properties[J]. Rare Metal Materials and Engineering,2018,47(S2):94~98.]
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Received:December 04,2017
Revised:February 14,2018
Adopted:February 22,2018
Online: November 01,2018
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