Performance improvement of electrochromic display devices employing micro-size precipitates of tungsten oxide.
- Resource Type
- Article
- Authors
- Cheng, Chin-Pao; Kuo, Yi; Chou, Chuan-Pu; Cheng, Chun-Hu; Teng, Tun
- Source
- Applied Physics A: Materials Science & Processing. Sep2014, Vol. 116 Issue 4, p1553-1559. 7p. 1 Black and White Photograph, 6 Graphs.
- Subject
- *ELECTROCHROMIC devices
*PERFORMANCE evaluation
*PRECIPITATION (Chemistry)
*TUNGSTEN oxides
*SOLID state chemistry
*TANTALUM
- Language
- ISSN
- 0947-8396
In this paper, we studied the effect of micro-size WO precipitates on the electrochromic characteristics based on aging test. The electrochromic mechanism can be effectively investigated by a solid-state TaN/WO/ITO capacitor. The experimental results reveal that WO electrochromic devices with optimized aging time of 4 days exhibit a higher optical contrast and longer retention time, which is mainly attributed to the formation of micro-size WO precipitates during aging process. The performance improvement using micro-size WO precipitates has the potential in future large-area window or energy efficient display applications. [ABSTRACT FROM AUTHOR]