Synthesis of ultra-nano-carbon composite materials with extremely high conductivity by plasma post-treatment process of ultrananocrystalline diamond films

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Title:	Synthesis of ultra-nano-carbon composite materials with extremely high conductivity by plasma post-treatment process of ultrananocrystalline diamond films
Authors:	Yeh, Chien-Jui;Manoharan, Divinah;Chang, Hsin-Tzer;Leou, Keh-Chyang;Lin, I-Nan
Date:	2015-08-13
Issue Date:	2016-01-06 11:04:42 (UTC+8)
Abstract:	Needle-like diamond grains encased in nano-graphitic layers are an ideal granular structure of diamond films to achieve high conductivity and superior electron field emission (EFE) properties. This paper describes the plasma post-treatment (ppt) of ultrananocrystalline diamond (UNCD) films at low substrate temperature to achieve such a unique granular structure. The CH4/N2 plasma ppt-processed films exhibit high conductivity of σ = 1099 S/cm as well as excellent EFE properties with turn-on field of E0 = 2.48 V/μm (Je = 1.0 mA/cm2 at 6.5 V/μm). The ppt of UNCD film is simple and robust process that is especially useful for device applications.
Relation:	Applied Physics Letters 107(8), 083104
DOI:	10.1063/1.4929587
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article

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