中国半导体行业协会封装分会会刊

中国电子学会电子制造与封装技术分会会刊

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电子与封装 ›› 2025, Vol. 25 ›› Issue (11): 110402 . doi: 10.16257/j.cnki.1681-1070.2025.0127

• 材料、器件与工艺 • 上一篇    下一篇

碳化硅MOSFET的单粒子漏电退化研究

徐倩1,2,马瑶1,2,黄文德1,2,杨诺雅1,2,王键1,2,龚敏1,2,李芸1,2,黄铭敏1,2,杨治美1,2   

  1. 1. 四川大学物理学院微电子技术四川省重点实验室,成都 610064;2. 四川大学物理学院辐射物理及技术教育部重点实验室,成都 610064
  • 收稿日期:2025-02-21 出版日期:2025-11-28 发布日期:2025-04-30
  • 作者简介:徐倩(1999—),女,四川达州人,硕士研究生,从事SiC功率器件辐照效应研究工作。

Investigation on Single-Event Leakage Degradation of SiC MOSFETs

XU Qian1, 2, MA Yao1, 2, HUANG Wende1, 2, YANG Nuoya1, 2, WANG Jian1, 2, GONG Min1, 2, LI Yun1, 2,HUANG Mingmin1, 2, YANG Zhimei1, 2   

  1. 1. Key Laboratory of Microelectronics, College of Physics, Sichuan University, Chengdu 610064,China; 2. Key Laboratory of Radiation Physics andTechnology, College of Physics, Sichuan University, Chengdu 610064,China
  • Received:2025-02-21 Online:2025-11-28 Published:2025-04-30

摘要: 通过重离子辐照实验,系统研究SiC金属-氧化物-半导体场效应晶体管(MOSFET)的单粒子漏电退化规律,并探讨潜在损伤对栅极可靠性的影响。采用光诱导电阻变化(OBIRCH)、聚焦离子束(FIB)和透射电子显微镜(TEM)等检测技术,对受单粒子潜在损伤影响的器件内部结构变化进行表征。结合宏观电学特性与微观结构变化,阐明SiC MOSFET单粒子漏电退化的机制。研究结果为提升SiC MOSFET在复杂辐照环境下的可靠性提供理论依据。

关键词: SiC, MOSFET, 单粒子效应, 漏电退化, 潜在损伤

Abstract: The degradation behavior of single-event leakage in SiC metal-oxide-semiconductor field-effect transistors (MOSFETs) is systematically investigated through heavy-ion irradiation experiments, and the impact of latent damage on gate reliability is explored. The internal structural changes of devices affected by single-event latent damage are characterized using optical beam-induced resistance change (OBIRCH), focused ion beam (FIB), and transmission electron microscopy (TEM) techniques. By correlating the macroscopic electrical characteristics with microscopic structural variations, the mechanism of single-event leakage degradation in SiC MOSFETs is elucidated. The results provide a theoretical basis for improving the reliability of SiC MOSFETs under complex irradiation environments.

Key words: SiC, MOSFET, single-event effect, leakage degradation, latent damage

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