中国物理B ›› 2009, Vol. 18 ›› Issue (5): 2078-2081.doi: 10.1088/1674-1056/18/5/059

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Field electron emission from bunchy flake-like nano-carbonfilms

王小平, 王丽军, 段新超, 王隆洋, 张雷, 吕承瑞, 雷通   

  1. College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China
  • 收稿日期:2008-09-11 修回日期:2008-11-23 出版日期:2009-05-20 发布日期:2009-05-20
  • 基金资助:
    Project supported by the Shanghai Education Committee of China (Grant No 07ZZ95).

Field electron emission from bunchy flake-like nano-carbon films

Wang Xiao-Ping(王小平)†, Wang Li-Jun(王丽军), Duan Xin-Chao(段新超), Wang Long-Yang(王隆洋), Zhang Lei(张雷), Lv Cheng-Rui (吕承瑞), and Lei Tong(雷通)   

  1. College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China
  • Received:2008-09-11 Revised:2008-11-23 Online:2009-05-20 Published:2009-05-20
  • Supported by:
    Project supported by the Shanghai Education Committee of China (Grant No 07ZZ95).

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摘要： This paper reports that bunchy flake-like nano-graphite crystallite films (BNGCFs) were deposited on Si substrates by using the microwave chemical vapour deposition technique. Furthermore the BNGCFs were characterized by x-ray diffraction spectra, scanning electron microscopy, Raman spectra and field emission (FE) I--V measurements, and a lowest turn-on field of 1.5V/μm, and a high average emission current density of 30mA/cm*

关键词: bunchy flake-like nano-graphite crystallites films, chemical vapour deposition, electron field emission

Abstract: This paper reports that bunchy flake-like nano-graphite crystallite films (BNGCFs) were deposited on Si substrates by using the microwave chemical vapour deposition technique. Furthermore the BNGCFs were characterized by x-ray  diffraction spectra, scanning electron microscopy, Raman spectra and field emission (FE) $I$--$V$ measurements, and a lowest turn-on field of 1.5 V/$\mu $m, and a high average emission current density of 30 mA/cm$^{2}$ at a  macroscopic electric field of 8.0 V/$\mu $m were obtained. The $J$--$E$ data did not follow the original Fowler--Nordheim (F--N) relation since they were not well represented in the F--N plot by a straight line. A model  considering the F--N mechanism, and the statistic effects of FE tip structures has been applied successfully to explain all the FE data observed for $E<8.8$ V/$\mu $m.

Key words: bunchy flake-like nano-graphite crystallites films, chemical vapour deposition, electron field emission

中图分类号:  (Field emission, ionization, evaporation, and desorption)

  • 79.70.+q
81.15.Gh (Chemical vapor deposition (including plasma-enhanced CVD, MOCVD, ALD, etc.)) 68.55.-a (Thin film structure and morphology) 78.30.Na (Fullerenes and related materials) 78.66.Tr (Fullerenes and related materials) 78.67.-n (Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)