期刊
NANO LETTERS
卷 13, 期 8, 页码 3589-3593出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl401304n
关键词
W18O49 nanowires; electrochromic; poly(vinyl pyrrolidone); macroscopic-scale assembly
类别
资金
- National Basic Research Program of China [2010CB934700]
- National Natural Science Foundation of China [91022032, 91227103, 21061160492]
- Chinese Academy of Sciences [KJZD-EW-M01-1]
- National Synchrotron Radiation Laboratory at the University of Science and Technology of China
- Fundamental Research Funds for the Central Universities [WK 2340000033]
Ordered W18O49 nanowire thin films were fabricated by Langmuir-Blodgett (LB) technique in the presence of poly(vinyl pyrrolidone) coating. The well-organized monolayer of W18O49 nanowires with periodic structures can be readily used as electrochromic sensors, showing reversibly switched electrochromic properties between the negative and positive voltage. Moreover, the electrochromism properties of the W18O49 nanowire films exhibit significant relationship with their thickness. The coloration/bleaching time was around 2 s for the W18O49 nanowire monolayer, which is much faster than the traditional tungsten oxide nanostructures. Moreover, the nanowire devices display excellent stability when color switching continues, which may provide a versatile and promising platform for electrochromism device, smart windows, and other applications.
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