title: Ultrathin W18O49 nanowire assemblies for electrochromic devices.
abstract: 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.
authors.affiliation: 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.
authors.forename: By Jian-Wei
authors.initials: BJ
authors.lastname: Liu
authors.forename: Jing
authors.initials: J
authors.lastname: Zheng
authors.forename: Jin-Long
authors.initials: JL
authors.lastname: Wang
authors.forename: Jie
authors.initials: J
authors.lastname: Xu
authors.forename: Hui-Hui
authors.initials: HH
authors.lastname: Li
authors.forename: Shu-Hong
authors.initials: SH
authors.lastname: Yu