期刊
ACS NANO
卷 12, 期 1, 页码 559-567出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.7b07360
关键词
electrochromic device; polyoxometalates; W18O49 nanowires; near-infrared; visible light
类别
资金
- National Natural Science Foundation of China [51372054, 51572059]
- HIT Environment and Ecology Innovation Special Funds [HSCJ201618]
Over the past years the performance of electrochromic smart windows with the promising potential for significant energy savings has been progressively improved; however, the electrochromic windows have not yet to come into use at scale mainly because the electrochromic materials suffer from some significant drawbacks such as low coloration efficiency, slow switching time, bad durability and poor functionality. Herein, we fabricate the optically modulated electrochromic smart devices through sequential deposition of the crown-type polyoxometalates, K28Li5H7P8W48O184 center dot 92H(2)O (P8W48) and W18O49 nanowires. Unlike most reported electrochromic smart devices, the resulting P8W48 and W18O49 nanocomposites allow active and selective manipulation of the transmittance of near-infrared (750-1360 nm) and visible light (400-750 nm) by varying the applied potential. Furthermore, thanks to the stable nature of both P8W48 and W18O49 and precise structural control over nanocomposites, the prepared electrochromic smart devices exhibit high efficiency, quick response and excellent stability.
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