Journal of South China University of Technology (Natural Science Edition) ›› 2005, Vol. 33 ›› Issue (12): 1-4.

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Investigation into Polymer Films as Field Emission Cathode Conditioned by Electric Discharge

Peng Jun-biao  Cheng Lan  Lai Guo-hong  Cao Yong   

  1. Institute of Polymer Optoelectronic Materials and Devices,South China Univ.of Tech.,Guangzhou 5 10640,Guangdong，China
  • Received:2005-03-01 Online:2005-12-25 Published:2005-12-25
  • Contact: 彭俊彪(1962-)，男，教授，博士生导师，主要从事有机／高分子电致发光器件物理及相关光电子器件物理研究 E-mail:psjbpeng@scut.edu.cn
  • About author:彭俊彪(1962-)，男，教授，博士生导师，主要从事有机／高分子电致发光器件物理及相关光电子器件物理研究
  • Supported by:

    国家自然科学基金资助项目(90201023)和国家“973”计划资助项目(2002CB613405)

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Abstract:

The characteristics of the field electron emission of four polymer films(PANI-CSA:polyaniline-camphor sulfonic acid,PEDOT:poly(ethylenedi0xythiophene),PVK:poly(N-vinyl-carbazole)and PMMA:poly(methyl methacrylate))conditioned by the electric discharge were investigated in this paper.During the investigation.the four films were first prepared by coating the corresponding solutions on ITO (indium tinoxide)glass,which were
next used as the field emission cathode after the superficial treatment by electric discharge in a vacuum testing case.The threshold voltages,curent and voltage I-V characteristics and coresponding Fowler-Nordheim(F-N)plots of the four films were then compared each other,and the conductivities were finally tested to find out how the conductivity influences the electric discharge effect.Experimental results indicate that,in an electric field,the electron emis.sion ability of polymer film has larger conductivity after relates to the conductivity,and becomes stronger when the polymer film conditioned by electric discharge.

Key words: polymer film, field mission, electric discharge