Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, People's Republic of China.
Nano Lett. 2013 Aug 14;13(8):3589-93. doi: 10.1021/nl401304n. Epub 2013 Jul 25.
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.
有序的 W18O49 纳米线薄膜通过 Langmuir-Blodgett（LB）技术在聚（乙烯基吡咯烷酮）涂层的存在下制备。具有周期性结构的 W18O49 纳米线的良好组织单层可以很容易地用作电致变色传感器，在正负电压之间表现出可逆切换的电致变色特性。此外，W18O49 纳米线薄膜的电致变色性能与其厚度具有显著的关系。对于 W18O49 纳米线单层，着色/褪色时间约为 2 秒，比传统的氧化钨纳米结构快得多。此外，当继续进行颜色切换时，纳米线器件显示出优异的稳定性，这可能为电致变色器件、智能窗户和其他应用提供一个通用且有前途的平台。
