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Fabrication and fast photoresponse properties of ZnO nanowires photodetectors

Song Zhi-Ming Zhao Dong-Xu Guo Zhen Li Bin-Hui Zhang Zhen-Zhong Shen De-Zhen

Fabrication and fast photoresponse properties of ZnO nanowires photodetectors

Song Zhi-Ming, Zhao Dong-Xu, Guo Zhen, Li Bin-Hui, Zhang Zhen-Zhong, Shen De-Zhen
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Publishing process
  • Received Date:  17 June 2011
  • Accepted Date:  01 July 2011
  • Published Online:  05 March 2012

Fabrication and fast photoresponse properties of ZnO nanowires photodetectors

  • 1. Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences,Changchun 130033, China;
  • 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
Fund Project:  Project supported by the National Basic Research Program of China (Grant No. 2011CB302006).

Abstract: One-dimensional ZnO nanostructure is especially attractive because of its unique properties such as high surface-to-volume ratio and a large exciton binding energy, but how to put it into a device is still a challenge. In this article, we show that a novel lateral metal-semiconductor-metal ultraviolet detector composed of ZnO nanowires is fabricated on glass substrate by a single-step hydrothermal approach. The fabricated photodetector demonstrates that the response to UV illumination in air is fast, the rise time is about 4 s, and the fall time is about 5 s, which could be attributed to the fact that the adsorption and the desorption of water molecules in the air onto oxygen vacancy of the nanowire significantly influence the photoresponse.

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