RF-PECVD synthesis of carbon nanowalls and their field emission properties

被引：44
作者：
Cui, Linfan [1 ,2 ]
Chen, Jiangtao [1 ]
Yang, Bingjun [1 ]
Sun, Dongfei [1 ]
Jiao, Tifeng [2 ]
机构：
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lab Clean Energy Chem & Mat, Lanzhou 730000, Peoples R China
[2] Yanshan Univ, Sch Environm & Chem Engn, Hebei Key Lab Appl Chem, Qinhuangdao 066004, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2015年 / 357卷
基金：
中国国家自然科学基金;
关键词：
Carbon nanowall; Field emission; Microstructure; PECVD; NANOSTRUCTURED MATERIALS; GROWTH; GRAPHENE; FABRICATION; SPECTROSCOPY; NANOSHEETS; NANOTUBES; MECHANISM; GRAPHITE;
D O I：
10.1016/j.apsusc.2015.08.252
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Carbon nanowalls (CNWs) were successfully fabricated on various substrates by radio frequency plasma-enhanced chemical vapor deposition using gas mixtures of acetylene, argon and hydrogen without aid of any catalyst or substrate pretreatment. The influence of synthesis parameters on the field emission behaviors of CNWs was investigated in depth. The results showed that the morphology and microstructure of CNWs could be adjusted by growth parameters (temperature, pressure and gas flow rate), and CNWs with sharp edges displayed good field emission properties. Especially, the sample prepared under the pressure of 300 Pa and the temperature of 650 degrees C with H-2 flow rate of 120 sccm exhibited the best field emission performance (the turn-on and threshold fields were 4.7 and 6.0 V/mu m, respectively). In addition, the field emission characteristics of CNWs after stability test had no obvious deterioration; however, the morphology and microstructure of CNWs changed. (C) 2015 Elsevier B.V. All rights reserved.
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页码：1 / 7
页数：7
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