Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (5): 858.

• Letters • Previous Articles     Next Articles

Photo-generated Charge Transfer Characteristics of n-Si/TiO2/Azo Pigment in Micrometer Regions

WANG Xue-Song, WANG Ling-Ling, WANG De-Jun, XIE Teng-Feng*   

  1. College of Chemistry, Jilin University, Changchun 130012, China
  • Received:2010-01-27 Online:2010-05-10 Published:2010-05-10
  • Contact: XIE Teng-Feng. E-mail: xietf@jlu.edu.cn
  • Supported by:

    国家“九七三”计划项目(批准号: 2007CB613303)和国家自然科学基金(批准号: 20703020, 20873053)资助.

Abstract:

The photo-generated charge transfer characteristics of n-Si/TiO2/Azo pigment in micrometer regions was studied by means of kelvin probe force microscopy(KFM) technique. The results showed that the photo-generated electrons of Azo pigment particles transferred to n-Si/TiO2 under illumination, and a photo-induced p-n-p structure in micro-scale was observed for the first time. This result indicates that photo-generated charge transfer characteristics of organic/inorganic complex in nano-scale can be observed directly by KFM.

Key words: Heterostructures; Surface photovoltage character; Kelvin probe force microscopy(KFM); Photo-generated charges transfer

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