Excellent field emission from semialigned carbon nanofibers grown on cylindrical copper surface

Abstract

We report the field emission from carbon nanofibers (CNFs) grown directly on cylindrical copper by a simple pyrolysis technique. The turn-on field is 0.17 V/μm and the emission current density is 0.9 mA/cm2 at 0.35 V/μm. The emission current is stable at a field of 0.35 V/μm and 6.5×10−6 Torr. The excellent field emission behavior is attributed to the sp2 phase in CNFs and the stable emission is due to the direct growth. The direct growth on cylindrical cathode is advantageous for field emission.

Room temperature deposition of ultra sharp ZnO nanospike arrays on metallic, non-metallic and flexible carbon fabrics: Efficient field emitters

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Direct Growth of Carbon Nanotubes on Metal Supports by Chemical Vapor Deposition

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