物理化学学报 >> 1996, Vol. 12 >> Issue (07): 615-620.doi: 10.3866/PKU.WHXB19960708

研究论文 上一篇    下一篇

NiOxHy薄膜的电致变色特性和机理

吴正华,丘思畴,黄汉尧,何华辉   

  1. 华中理工大学固体电子学系，武汉 430074
  • 收稿日期:1995-12-07 修回日期:1996-02-10 发布日期:1996-07-15
  • 通讯作者: 吴正华

Study on the Characteristics and Mechanism of Electrochromism of NiOxHy Thin Film

Wu Zheng-Hua,Qiu Si-Chou,Huang Han-Yao,He Hua-Hui   

  1. Department of Solid State Electronics,Huazhong University of Science and Technoly,Wuhan 430074
  • Received:1995-12-07 Revised:1996-02-10 Published:1996-07-15
  • Contact: Wu Zheng-Hua

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摘要：

运用循环伏安和阶跃电位方法研究了Ni（OH）2粉末靶直流溅射沉积的NiOxHy薄膜电致变色特性．结合实时的光透射-时间变化，发现着色后的薄膜在零外电势下有一自发的消色过程，该过程可能对应着Li+的自发注入。着色没有自发过程. 获取了着消色状态Ni2p3／2和O1s的XPS谱，表明在着色态镍被氧化，消色态镍被还原，相应地氧的化学环境发生改变．

关键词: NiOxHy薄膜, 电化学离子注入/抽出, 电致变色, XPS谱

Abstract:

 The electrochromic characteristics of the NiOxHy thin film DC sputtered from powder Ni(OH)2 target are investigated in LiClO4-PC nonaqueous electrolyte by cyclic voltammetry, volt -transmittance and step potential methods. The spontaneous bleaching process occurs in the zero potential period immediately after the colouring period and corresponds to the Li+ insertion. The colouration process is not spontaneous. XPS spectra are obtained for the bleached and coloured states in Ni2p3/2 and O1s regions. Ni atoms are oxidized in coloured state and reduced in bleached state. The chemical enviroments for O atoms are changed accordingly.

Key words: NiOxHy thin film, Electrochemical ion insertion/extraction, Electrochromism, XPS spectra