Electronic Science and Technology ›› 2019, Vol. 32 ›› Issue (2): 66-69.doi: 10.16180/j.cnki.issn1007-7820.2019.02.014

Previous Articles     Next Articles

Effect of Atmosphere on the Performance of Ultraviolet Detector Based on Ultrathin ZnO Nanosheets

ZHAO Shuang,ZHU Yuankun,WANG Xianying   

  1. School of Materials Science and Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China
  • Received:2018-01-12 Online:2019-02-15 Published:2019-01-02
  • Supported by:
    National Natural Science Foundation of China(51572173)


The unique nanostructures of two dimensional wide band gap semiconductor materials make it an ideal material for high performance UV- detectors. However, in the practical application process,various environment atmospheres can significantly affect the performance of UV detectors. In this paper, researchers used chemical vapor deposition method to prepare ultra-thin two-dimensional ZnO nanosheets which were further utilized to fabricate UV detection devices.Placed the detection device in a closed system for testing to exclude the impact of different application environments on the test results. At the same time, the influence of different polar molecules on the properties of two-dimensional ultrathin ZnO nanosheet UV detector wereemphatically studied.The results showed that in the presence of polar molecules, the dark current of ZnO nanoviolet photodetector was reduced by 1.5~2 times while the sensitivity and response rate were increased by about 1.5 times.

Key words: ZnO, polar molecules, optical detector, dark current, sensitivity, response rate

CLC Number: 

  • TN36