SHI Yan-mei,YANG Yan-ning,LIU Qiao-ping,LI Wei-xia.Field emission characteristics of nano-diamond cathode surface by graphitization pretreatment[J].Optoelectronics Letters,2016,12(2):85-88 Field emission characteristics of nano-diamond cathode surface by graphitization pretreatment Author Name Affiliation SHI Yan-mei  College of Physics & Electron Information and Information & Communication Engineering Research Institution, Yan’an University, Yan’an 716000, China  YANG Yan-ning  College of Physics & Electron Information and Information & Communication Engineering Research Institution, Yan’an University, Yan’an 716000, China  LIU Qiao-ping  College of Physics & Electron Information and Information & Communication Engineering Research Institution, Yan’an University, Yan’an 716000, China  LI Wei-xia  College of Physics & Electron Information and Information & Communication Engineering Research Institution, Yan’an University, Yan’an 716000, China  Abstract:       Cathode samples of nano-diamond by graphitization pretreatment with different temperatures were fabricated by electrophoresis, then the structures and morphologies of the cathode samples were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD), and the field emission tests were conducted. The effects of graphitization pretreatment on the field emission characteristics of nano-diamond cathode surface on titanium substrate are studied. The results indicate that the surface morphologies of nano-diamond cathode samples after graphitization pretreatment change a lot, and the field emission characteristics in low-voltage area are improved obviously. However, in high-voltage area, the curve distortion happens, and it doesn’t conform the mechanism of field emission characteristics. Hits: 3954 Download times: 0 View Full Text    Download reader