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人工晶体学报 ›› 2026, Vol. 55 ›› Issue (2): 233-240.DOI: 10.16553/j.cnki.issn1000-985x.2025.0190

• 研究论文 • 上一篇    下一篇

基于蒙特卡洛方法的β-Ga2O3肖特基势垒二极管质子辐照效应研究

师道田1(), 孙晴2, 钱叶旺1, 刘传洋1, 吴卫锋1,3, 刘景景1, 汪新建1, 陈钟1, 阮再冉2, 王杨婧涵2   

  1. 1.池州学院机电工程学院,池州 247000
    2.池州学院商学院,池州 247000
    3.安徽省半导体产业共性技术研究中心,池州 247000
  • 收稿日期:2025-08-31 出版日期:2026-02-20 发布日期:2026-03-06
  • 作者简介:师道田(1991—),男,安徽省人,博士。E-mail:shidt@czu.edu.cn
  • 基金资助:
    池州学院高层次人才科研启动基金项目(CZ2024YJRC28);安徽省高校协同创新项目GXXT-2022-088;池州学院新能源与节能技术研究中心(KYJG002);大学生创新创业训练计划(S202511306123);大学生创新创业训练计划(S202511306142)

Proton Irradiation Effect of β -Ga2O3 Schottky Barrier Diode Based on Monte Carlo Method

SHI Daotian1(), SUN Qing2, QIAN Yewang1, LIU Chuanyang1, WU Weifeng1,3, LIU Jingjing1, WANG Xinjian1, CHEN Zhong1, RUAN Zairan2, WANG Yangjinghan2   

  1. 1.School of Mechanical and Electrical Engineering,Chizhou University,Chizhou 247000,China
    2.School of Business,Chizhou University,Chizhou 247000,China
    3.Anhui Research Center of Semiconductor Industry Generic Technology,Chizhou 247000,China
  • Received:2025-08-31 Online:2026-02-20 Published:2026-03-06

摘要: 本文利用基于蒙特卡洛方法的SRIM-2013软件,模拟10~1 000 keV能量质子对β-Ga2O3的辐照损伤,并结合热电子发射(TE)模型研究质子辐照对β-Ga2O3肖特基势垒二极管(SBD)反向漏电性能的影响。模拟结果表明,核外电子阻止能力远大于原子核阻止能力。随着质子辐照剂量增加,原子平均离位(DPA)和Ga空位(VGa)浓度逐渐增大,峰值分别为0.007 65和3.48×1020 cm-3。随着辐照能量增加,虽然辐照损伤逐渐深入到β-Ga2O3靶材内部,但是DPA和VGa浓度逐渐降低。热电子发射模型分析表明,当载流子浓度从1×1019 cm-3降低到1×1016 cm-3时,反向漏电流密度减小,器件反向漏电性能得到明显改善。质子辐照产生的大量VGa补偿部分载流子,削弱了镜像力对肖特基势垒的影响,可能是β-Ga2O3 SBD器件反向漏电性能改善的主要原因。

关键词: β-Ga2O3; 质子辐照; SRIM; 肖特基势垒二极管; 热电子发射

Abstract: In this paper,the SRIM-2013 sofware based on Monte Carlo method was used to simulate the irradiation damage of β-Ga2O3 by protons with energy of 10 ~ 1 000 keV,and by combining with the thermionic emission (TE) model,the effect of proton irradiation on the reverse leakage performance of β-Ga2O3 Schottky barrier diode (SBD) was studied. The simulation results indicate that the stopping power of extranuclear electrons is much greater than stopping power of atomic nucleus. With the proton irradiation dose increases,the displacement per atom (DPA) and Ga vacancy (VGa) concentrations gradually increase,with peak values of 0.007 65 and 3.48 × 1020 cm-3,respectively. With the irradiation energy increases,the irradiation damage gradually penetrates into the interior of β-Ga2O3 target,but the DPA and VGa concentrations gradually decrease. The analysis of the TE model shows that when the carrier concentration decreases from 1×1019 cm-3 to 1×1016 cm-3,the reverse leakage current density decreases,the device reverse leakage performance is significantly improved. The large amount of VGa generated by proton irradiation compensates some carrier,weakening the effect of mirror force on the Schottky barrier,which may be the main reason for the improvement of the reverse leakage performance of β-Ga2O3 SBD devices.

Key words: β-Ga2O3; proton irradiation; SRIM; Schottky barrier diode; thermionic emission

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