中国物理B ›› 2012, Vol. 21 ›› Issue (8): 87902-087902.doi: 10.1088/1674-1056/21/8/087902

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Research on field emission mechanism of nano-structured carbon film

王艳燕a, 李英爱b, 许基松a, 顾广瑞a   

  1. a Department of Physics, College of Science, Yanbian University, Yanji 133002, China;
    b National Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
  • 收稿日期:2012-01-09 修回日期:2012-02-15 出版日期:2012-07-01 发布日期:2012-07-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11164031) and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, Ministry of Education of China (Grant No. (2009)1341).

Research on field emission mechanism of nano-structured carbon film

Wang Yan-Yan (王艳燕)a, Li Ying-Ai (李英爱)b, Xu Ji-Song (许基松)a, Gu Guang-Rui (顾广瑞 )a   

  1. a Department of Physics, College of Science, Yanbian University, Yanji 133002, China;
    b National Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
  • Received:2012-01-09 Revised:2012-02-15 Online:2012-07-01 Published:2012-07-01
  • Contact: Gu Guang-Rui E-mail:grgu@ybu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11164031) and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, Ministry of Education of China (Grant No. (2009)1341).

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摘要： The field emission (FE) characteristics of nano-structrued carbon films (NSCFs) are investigated. The saturation behaviour of the field emission current density found at high electric field E cannot be reasonably explained by the traditional Fowler-Nordheim (F-N) theory. A three-region E model and the curve-fitting method are utilized for discussing the FE characteristics of NSCFs. In the low, high, and middle E regions, the FE mechanism is reasonably explained by a modified F-N model, a corrected space-charge-limited-current (SCLC) model and the joint model of F-N and SCLC mechanism, respectively. Moreover, the measured FE data accord well with the results from our corrected theoretical model.

关键词: nano-structured carbon films, field emission, F-N theory, space charge limited current, three-region electric field model

Abstract: The field emission (FE) characteristics of nano-structrued carbon films (NSCFs) are investigated. The saturation behaviour of the field emission current density found at high electric field E cannot be reasonably explained by the traditional Fowler-Nordheim (F-N) theory. A three-region E model and the curve-fitting method are utilized for discussing the FE characteristics of NSCFs. In the low, high, and middle E regions, the FE mechanism is reasonably explained by a modified F-N model, a corrected space-charge-limited-current (SCLC) model and the joint model of F-N and SCLC mechanism, respectively. Moreover, the measured FE data accord well with the results from our corrected theoretical model.

Key words: nano-structured carbon films, field emission, F-N theory, space charge limited current, three-region electric field model

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

  • 79.70.+q
81.05.U- (Carbon/carbon-based materials) 81.15.Gh (Chemical vapor deposition (including plasma-enhanced CVD, MOCVD, ALD, etc.))