Field emission properties of porous diamond-like films produced by chemical vapor deposition

被引：24
|
作者：
Mammana, VP
Santos, TEA
Mammana, AP
Baranauskas, V
Ceragioli, HJ
Peterlevitz, AC
机构：
[1] Univ Estadual Campinas, Fac Engn Eletr & Computacao, BR-13083970 Campinas, SP, Brazil
[2] Minist Ciencia & Tecnol, Inst Ctr Pesquisas Renato Archer, BR-13089500 Campinas, SP, Brazil
来源：
APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 18期
关键词：
D O I：
10.1063/1.1517724
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The field emission properties of "porous diamond-like" carbon structures have been characterized. A hot filament chemical vapor deposition system fed with ethyl alcohol vapor diluted in helium was used to deposit the samples. Morphological analysis by field emission scanning electron microscopy revealed that they had a highly porous structure, which was attributed to the modification of the kinetics of the carbon deposition process due to the presence of helium as a buffer gas. Micro-Raman spectroscopy showed two peaks in the graphene and microcrystalline graphite frequencies and a new peak at 1620 cm(-1). Low threshold fields (E-t) and hysteresis in the current versus voltage characteristic have been observed, and a model to explain the hysteresis is proposed. (C) 2002 American Institute of Physics.
引用
收藏
页码：3470 / 3472
页数：3
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