Atomic and Electronic Properties of the Electorchromic V2o5/Mo-V2O5 films Determined by in-situ XAS

• Main Authors: Chun-Yan Lin, 林俊彥
• Other Authors: Da-Hua Wei
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/38dv8x

碩士 === 國立臺北科技大學 === 機械工程系機電整合碩士班 === 106 === Electrochromic switching devices have attracted considerable attention because these thin films are the most promising materials for energy-saving in green building application. The vanadium oxide system is simple and inexpensive because only a single-layer film of this material is sufficient for coloration. The film thickness. morphology, and crystal structure were determined by scanning electron microscopy and x-ray diffraction. The optical property was characterized by UV-Vis spectroscopy. The electrochemical properties were determined by cyclic voltammetry. The results show that the Mo-modified V2O5 thin film exhibits better coloration rate than as-made one which can be attributable to the changes of local atomic symmetry and electronic structure. In situ/operando X-ray absorption spectroscopy was used to track the evolution of atomic and electronic structures under electrochromic coloration to elucidate the color switching mechanism. This study may provide important process for the fabrication of electrochromic films for energy-saving windows or other useful electronic devices.