Synthesis of Carbon Nanoflakes by Radio-Frequency Sputtering and Their Field Emission Characteristics

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概要

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• The growth, structure and field emission properties of the two-dimensional carbon nanoflakes (CNFs) produced by radio-frequency (RF) sputtering without any catalyst or special substrate treatment have been investigated. The effects of deposition parameters (such as deposition time, sputtering gas composition, substrate temperature and RF power) on the structure and properties of the CNFs were also studied. Possible growth mechanism of the CNFs has been discussed with time evolution of surface microstructure. These films contain nanosized diamonds and allotropic phases (i-carbons and graphites) embedded in amorphous carbon films. The electron field emission (EFE) process can be turned on at $E_{0}=2.8$ V/μm, achieving an EFE current density of $J_{\text{e}} = 1$ mA/cm2 at a 5 V/μm applied field. The low turn-on field of 2.8 V/μm for electron field emission suggests that the CNFs could be used as a potential edge emitter.

• 2010-08-25

著者

• Lin I-nan

  Department Of Chemistry Materials Science Center National Tsing-hua University

• Shih Wen-ching

  Graduate Institute In Electro-optical Engineering Tatung Univ.

• Jeng Jian-Min

  Graduate Institute in Electro-Optical Engineering, Tatung University, No. 40, Sec. 3, Chungshan North Road, Taipei 104, Taiwan, R.O.C.

• Chen Huang-Chin

  Department of Physics, TamKang University, Taipei 251, Taiwan, R.O.C.

• Lo Jyi-Tsong

  FED R&D Division, Tatung Company, No. 22, Sec. 3, Chungshan North Road, Taipei 104, Taiwan, R.O.C.

• Tsou Chi-Wei

  Graduate Institute in Electro-Optical Engineering, Tatung University, No. 40, Sec. 3, Chungshan North Road, Taipei 104, Taiwan, R.O.C.

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