高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (5): 824.

• 研究快报 • 上一篇    下一篇

三氧化钼与金纳米粒子复合薄膜光致变色特性的研究

贺涛1, 殷延华1, 马颖1, 江鹏2, 曹亚安1, 姚建年1   

  1. 1. 中国科学院化学研究所, 分子科学中心, 中国科学院光化学开放实验室, 北京 100080;
    2. 中国科学院物理研究所凝聚态物理中心, 北京真空物理实验室, 北京 100080
  • 收稿日期:2000-08-31 出版日期:2001-05-24 发布日期:2001-05-24
  • 通讯作者: 姚建年(1953年出生),男,博士,研究员,博士生导师,从事光电化学研究.E-mail:jnyao@ipe.ac.cn E-mail:jnyao@ipe.ac.cn
  • 基金资助:

    国家自然科学基金(批准号:59932040);中国科学院重点资助项目;国家重点基础研究“九七三”项目(批准号:G19990330)

Photochromic Properties of MoO3 and Au Nanoparticles Composite Thin Films

HE Tao1, YIN Yan-Hua1, MA Ying1, JIANG Peng2, CAO Ya-An1, YAO Jian-Nian1   

  1. 1. Center for Molecular Science, Institute of Chemistry, Laboratory of Photochemistry, Chinese Academy of Sciences, Beijing 100080, China;
    2. Beijing Laboratory of Vacuum Physics, Center for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2000-08-31 Online:2001-05-24 Published:2001-05-24

关键词: MoO3, 金纳米粒子, 光致变色, 复合膜

Abstract: 1-Nonanethiol capped gold nanoparticles were firstly used to modify the surface of MoO3 thin films in order to fabricate the MoO3/Au composite thin film. Absorption experiments and XPSmeasurements were used to investigate the effect of Au nanoparticles on the photochromic properties of the composite thin film. According to the XPSmeasurements, the binding energy for the valence band(O2p ) of the composite thin films decreased. The experimental results of absorbance showed that the photochromic efficiency for the composite thin films became at least as two times as that of MoO3 thin films. The mechanism of enhancement can be explained by the band energy theory of semiconductor. The Schottky barrier formed at the interface prolonged the electron hole pair separation lifetime and resulted in the enhancement of the photochromic efficiency.

Key words: MoO3, Gold nanoparticles, Photochromism, Composite thin films

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