Modified electrochromism of tungsten oxide via platinum nanophases

초록

We report electrochromic properties of WO3 modified by platinum nanophases. The WO3 incorporated by Pt metallic nanophases (Pt-WO3) showed exactly reverse electrochromic phenomenon compared with that of both pure WO3 and WO3 intercepted and coated by metallic Pt thin-film layer. In addition, to investigate the origin of modified electrochromic properties, electrodes consisting of WO3 and/or Pt layers were designed and observed in optical properties during electrochemical reaction. The change of electrochromic properties in the Pt-WO3 is caused by modified structural and electrochemical properties of the WO3 by Pt metallic nanophases dispersed in the oxide matrix. (c) 2006 American Institute of Physics.

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