Chin. Phys. Lett.  2005, Vol. 22 Issue (4): 981-983    DOI:
Original Articles |
Field Emission Characteristics of BN Films Treated with H2 and O2 Plasma
GU Guang-Rui1;WU Bao-Jia1;JIN Feng-Xi1;LI Quan-Jun1;LI Zhe-Kui1;ZHENG Wei-Tao2;ZHAO Yong-Nian3;JIN Zeng-Sun3
1Department of Physics, College of Science and Engineering, Yanbian University, Yanji 133002 2Department of Materials Science, Jilin University, Changchun 130012 3National Laboratory for Superhard Materials, Jilin University, Changchun 130012
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GU Guang-Rui, WU Bao-Jia, JIN Feng-Xi et al  2005 Chin. Phys. Lett. 22 981-983
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Abstract BN films were synthesized on the (100)-oriented surface of n-Si (0.008--0.02Ωm) by rf magnetron sputtering physical vapor deposition (PVD). A BN film was first treated with H2 plasma for 60min and then the H2 treated sample was treated with O2 plasma for 15min. The films were characterizes by using Fourier transform infrared spectra (FTIR) and atomic force microscopy (AFM). The field emission characteristics of BN films were measured in an ultrahigh vacuum system. A turn-on electric field of 8V/μm and a current of 400μA/cm2 were obtained for the BN film treated with H2 plasma. The results show that the surface plasma treatment makes no apparent influence on the surface morphology of the BN films. The transformations of the sample emission characteristics have to do with the surface negative electron affinity (NEA) of the films possibly. The turn-on electric field of the BN film treated with H2 plasma is lower than that without treatment, which possibly attributes to the surface NEA effect. The surface NEA of the H2 treated BN film is lost after O2 plasma treatment.
Keywords: 79.70.+q      81.15.Cd     
Published: 01 April 2005
PACS:  79.70.+q (Field emission, ionization, evaporation, and desorption)  
  81.15.Cd (Deposition by sputtering)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2005/V22/I4/0981
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GU Guang-Rui
WU Bao-Jia
JIN Feng-Xi
LI Quan-Jun
LI Zhe-Kui
ZHENG Wei-Tao
ZHAO Yong-Nian
JIN Zeng-Sun
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