基于MATLAB的SiC肖特基二极管气体传感器模拟

提出了SiC-SBD 气体传感器器件分析模型，利用当前流行的MATLAB 强大的计算编程功能，模拟了SiC-SBD
气体传感器的电流-电压特性，结果与实验数据吻合很好，较好地解释了Pd-SiC 肖特基二极管比较灵敏的原因，并根
据模拟结果提出了提高传感器灵敏度的方法。
关键词: 碳化硅；肖特基二极管；气体传感器；MATLAB；模型
中图分类号: TN311.7 文献标识码:A 文章编号:1001-2028（2002）04-0006-03
Characteristics of SiC Schottky Diodes Gas
Sensors Simulated with MATLAB
ZHONG De-gang, XU Jing-ping, ZHANG Xu, YU Qian-yu, LIU Zhi-bo, YU Jun
(Department of Electronics of Science & Technology, Huazhong University of Science and Technology, Wuhan Hubei 430074)
Abstract：An analysis device model of SiC-SBD gas sensors was developed. The I-V characteristics of SiC -SBD gas
sensors were simulated by the popular and powerful MATLAB. The results exactly agree with the experiment results. In
addition, it explains why Pd-SiC Schottky diodes are more sensitive and find a way to improve the sensitivity of gas sensors.
Some approaches to increase sensibility are given based on the model.
Keyword：SiC; Schottky diodes; gas sensors; MATLAB; model