Synthesis and Characterization of Tungsten Trioxide Films Preparedby a Sol-Gel Method for Electrochromic Applications
(주)코리아스칼라
- 최초 등록일
- 2016.04.02
- 최종 저작일
- 2015.10
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서지정보
ㆍ발행기관 : 한국분말야금학회
ㆍ수록지정보 : 한국분말야금학회지 / 22권 / 5호
ㆍ저자명 : Tae-Ho Kim, Yoon-Chae Nah
목차
1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
Acknowledgements
References
영어 초록
Tungsten trioxide thin films are successfully synthesized by a sol-gel method using tungsten hexachlorideas precursors. The structural, chemical, and optical properties of the prepared films are characterized by scanning elec-tron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and UV-Vis spectrophotometry. The electrochem-ical and electrochromic properties of the films before and after heat treatment are also investigated by cyclicvoltammetry, chronoamperometry, and in situ transmittance measurement system. Compared to as-prepared films, heat-treated tungsten trioxide thin films exhibit a higher electrochemical reversibility of 0.81 and superior coloration effi-ciency of 65.7 cm2/C, which implies that heat treatment at an appropriate temperature is a crucial process in a sol-gelmethod for having a better electrochromic performance.
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