Work Function of Tungsten Carbide Thin Film Calculated Using Field Emission Microscopy

SUN Jian-ping; ZHANG Zhao-xiang; HOU Shi-min; ZHANG Geng-min; ZHAO Xing-yu; LIU Wei-min; XUE Zeng-quan

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Work Function of Tungsten Carbide Thin Film Calculated Using Field Emission Microscopy

更新时间：2025-07-16

- Work Function of Tungsten Carbide Thin Film Calculated Using Field Emission Microscopy
- Acta Electronica Sinica Vol. 30, Issue 5, Pages: 655-657(2002)
- 作者机构：
  
  北京大学电子学系,北京,100871
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN304
- Published：2002
- 稿件说明：
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SUN Jian-ping, ZHANG Zhao-xiang, HOU Shi-min, et al. Work Function of Tungsten Carbide Thin Film Calculated Using Field Emission Microscopy[J]. Acta Electronica Sinica, 2002, 30(5): 655-657.
DOI：

SUN Jian-ping, ZHANG Zhao-xiang, HOU Shi-min, et al. Work Function of Tungsten Carbide Thin Film Calculated Using Field Emission Microscopy[J]. Acta Electronica Sinica, 2002, 30(5): 655-657. DOI：

摘要

在1×10

-6

~10

-5

Pa环境压强下

经过高温退火处理

在钨针尖上形成了碳化钨薄膜

利用场发射显微镜观察到清楚的钨单晶基底上碳化钨薄膜的场发射图像;对碳化钨薄膜的场发射I-V特性及Fowler-Nordheim曲线进行测量和计算;用透射电镜测得针尖曲率半径并估算出比例因子β

利用Fowler-Nordheim公式计算得到碳化钨薄膜的逸出功约为3.79eV.

Abstract

Under pressure of 1×10

-6

~10

-5

a thin film of tungsten carbide is formed on the surface of tungsten tip of field emission microscopy after certain annealing treatment.Typical field emission patterns of tungsten carbide thin film is observed

and its I-V behavior and Fowler-Nordheim plot is measured.Using transmission electron microscopy

we measure the curvature radius of emission tip

and estimate the ratio factor β with an empirical formula

then calculate the work function φ of tungsten carbide thin film to be 3.79eV according to Fowler-Nordheim formula.

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Related Author

WANG Xiao-jing

LUO Xiao-liang

WANG Hao-xu

YIN Jian-cheng

HU Zhen-feng

LIANG Xiu-bing

XUE Zeng-quan

LIU Wei-min

Related Institution

Advanced Interdisciplinary Technology Research Center, National Innovation Institute of Defense Technology, Academy of Military Science

Department of Electronics,School of Electronics Engineering and Computer Science,Peking University

College of Chemistry and Molecular Engineering,Peking University

Department of ElectronicsSchool of Electronics Engineering and Computer SciencePeking UniversityBeijing 100871China

College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

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