Field Emission Characteristics of Carbon Nanometer Ball Films

LIU Zhi-chao; Li Ying-ai; WANG Jing; GU Guang-rui; WU Bao-jia

doi:10.3788/YJYXS20122703.0297

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Field Emission Characteristics of Carbon Nanometer Ball Films

Material Physics & Chemistry | 更新时间：2020-08-12

- Field Emission Characteristics of Carbon Nanometer Ball Films
- Chinese Journal of Liquid Crystals and Displays Vol. 27, Issue 3, Pages: 297-302(2012)
- 作者机构：
  
  1. 延边大学理学院物理系, 吉林延吉 133002
  2. 吉林大学超硬材料国家重点实验室, 吉林长春 130012
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20122703.0297
  CLC： TN873.95
- Received：19 January 2012，
  
  Revised：15 February 2011，
  
  Published Online：15 June 2012，
  
  Published：15 June 2012
- 稿件说明：
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刘智超, 李英爱, 王静, 顾广瑞, 吴宝嘉. 碳纳米球薄膜的场发射特性[J]. 液晶与显示, 2012,(3): 297-302

LIU Zhi-chao, Li Ying-ai, WANG Jing, GU Guang-rui, WU Bao-jia. Field Emission Characteristics of Carbon Nanometer Ball Films[J]. , 2012,(3): 297-302
刘智超, 李英爱, 王静, 顾广瑞, 吴宝嘉. 碳纳米球薄膜的场发射特性[J]. 液晶与显示, 2012,(3): 297-302 DOI： 10.3788/YJYXS20122703.0297.

LIU Zhi-chao, Li Ying-ai, WANG Jing, GU Guang-rui, WU Bao-jia. Field Emission Characteristics of Carbon Nanometer Ball Films[J]. , 2012,(3): 297-302 DOI： 10.3788/YJYXS20122703.0297.

摘要

利用微波等离子体化学气相沉积法

在Si(100)衬底上制备了碳纳米球薄膜。利用拉曼光谱和场发射扫描电子显微镜研究了薄膜的结构以及表面形貌

表明碳纳米球薄膜是由约2~3 m长、100 nm宽的无定形碳纳米片相互缠绕、交织成球状而构成的。在高真空系统中测量了碳纳米球薄膜的场发射特性

结果表明

碳纳米球薄膜具有良好的场发射特性

阈值电场为3.1 V/m

当电场增加到10 V/m时

薄膜的场发射电流密度可达到60.7 mA/cm

。通过三区域电场模型合理地解释了碳纳米球薄膜在低电场、中间电场和高电场区域的场发射特性。

Abstract

Carbon nanometer ball films were deposited on Si (100) by microwave plasma chemical vapor deposition. The structure and surface morphology of carbon nanometer ball films was investigated by using Raman spectroscopy and field emission scanning electron microscope. The carbon nanometer ball film was composed of large numbers of about 2~3 m-length and 100 nm-width amorphous carbon sheets which were intertwined and interwoven with each other into a ball. The field emission testing of carbon nanometer ball films was performed in a high vacuum system

and good field emission properties with a threshold field of 3.1 V/m and a current density of 60.7 mA/cm

at an electric field of 10 V/m were obtained from the carbon films. A three electric filed model was applied to explaining reasonably the field emission characteristics of carbon nanometer ball films in the low

middle and high electric field region.

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Keywords

references

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