计算物理 ›› 2006, Vol. 23 ›› Issue (1): 80-86.

• 论文 • 上一篇    下一篇

SiC电子霍耳迁移率的计算

王平, 杨银堂, 杨燕   

  1. 西安电子科技大学微电子所 宽禁带半导体材料与器件教育部重点实验室, 陕西 西安 710071
  • 收稿日期:2004-10-19 修回日期:2005-02-25 出版日期:2006-01-25 发布日期:2006-01-25
  • 作者简介:王平(1977-),男,陕西西安,博士生,从事岛SiC半导体材料数值计算及其器件建模方面的研究.
  • 基金资助:
    教育部重点(02074);国防科技预研基金(51408010601DZ1032)资助项目

A Calculation of Electron Hall Mobility in SiC

WANG Ping, YANG Yin-tang, YANG Yan   

  1. Ministry of Edu. Key Lab. of Wide Band-Gap Semiconductor Materials and Devices, Microelectronics Institute, Xidian University, Xi′an 710071, China
  • Received:2004-10-19 Revised:2005-02-25 Online:2006-01-25 Published:2006-01-25

摘要: 基于对自身能带结构的分析以及各向同性弛豫时间近似法,采用三椭球等能面、抛物线性简化,建立了适于模拟n型6H-SiC电子霍耳迁移率和霍耳散射因子的解析模型,精确描述了不同散射机制对于6H-SiC低场电子输运特性的影响.计算结果与实测值有很好的一致性.

关键词: 6H碳化硅, 电子霍耳迁移率, 霍耳散射因子, 解析模型

Abstract: With analysis of conduction band structure and isotropic relaxation time approximation, an analytical model for the electron Hall mobility and Hall scattering factor of n-type 6H-SiC is proposed. The impact of different scattering mechanisms on the low field electron transport in 6H-SiC is illustrated clearly. Three ellipsoidal and parabolic constant energy surfaces simplification are used. The calculated results are in good agreement with physical measurements.

Key words: 6H-SiC, electron Hall mobility, Hall scattering factor, analytical model

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