Electron Emission Properties of Selectively Grown Carbon Nanotubes for Electron Emitter in Microwave Power Amplifier

  • Han, Jae-Hee (Center for Nanotubes and Nanostructured Composites, Department of Materials Engineering, Sungkyunkwan University) ;
  • Lee, Tae-Young (Center for Nanotubes and Nanostructured Composites, Department of Materials Engineering, Sungkyunkwan University) ;
  • Kim, Do-Yoon (Center for Nanotubes and Nanostructured Composites, Department of Materials Engineering, Sungkyunkwan University) ;
  • Yoo, Ji-Beom (Center for Nanotubes and Nanostructured Composites, Department of Materials Engineering, Sungkyunkwan University) ;
  • Park, Chong-Yun (Center for Nanotubes and Nanostructured Composites, Department of Materials Engineering, Sungkyunkwan University) ;
  • Choi, Jin-Ju (School of Electronics Engineering, Gwangwoon University) ;
  • Jung, Tae-Won (Materials and Devices Lab., Samsung Advanced Institute of Technology) ;
  • Han, In-Taek (Materials and Devices Lab., Samsung Advanced Institute of Technology) ;
  • Kim, Jong-Min (Materials and Devices Lab., Samsung Advanced Institute of Technology)
  • Published : 2003.07.09

Abstract

We studied field-emission characteristics of CNTs under various pre-treatment with $NH_{3}$ plasma on the substrate. The turn-on electric field is the lowest value and field enhancement factor (${\beta}$) is he highest value in CNTs pre-treated by $NH_3$ plasma (80 W and 5 min). The field-emission property of CNTs grown on the Ta substrate is slightly better than on the W substrate.

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