摘要
借助半导体仿真工具Silvaco中所提供的工艺摸拟器(Athena)和器件摸拟器(Atlas),及L-Edit版图设计工具,设计了一款击穿电压高于-90 V、阈值电压为-4 V的p沟VDMOS器件。经实际流片测试,器件的导通电阻小于200 m!,跨导为5 S,栅-源泄漏电流和零栅电压时的漏-源泄漏电流均在纳安量级水平,二极管正向压降约为-1 V。采用2-D器件仿真方法以及相关物理模型对所设计的p沟VDMOS器件的单粒子烧毁(SEB)和单粒子栅击穿(SEGR)效应进行了分析和研究,并通过对所获得的器件样片采用钴-60"射线源进行辐照实验,研究了在一定剂量率、不同总剂量水平条件下辐照对所研制的p沟VDMOS器件相关电学参数的影响情况。
With process simulator (Athena) and device layout editor, one type of p-channel VDMOS was designed, simulator (Atlas) in whose BVDss is higher Silvaco and L-Edit than -90 V, and VCS(th) is -4 V. The test results show that RDS(on) is less than 200 m Ω, gfs is 5 S, IGSS and IDssare all in level of nA and VSD is about -1 V. Utilizing 2-D device simulation method and related simulation models, the single-event burnout (SEB) and single-event gate rupture (SEGR) effects of the designed p-channel VDMOS were analyzed. Through irradiating the device samples using Co-60 7ray source, the irradiation effects on some electrical parameters of the designed p-channel VDMOS with certain dose rate and different dose levels were studied.
出处
《半导体技术》
CAS
CSCD
北大核心
2011年第12期905-909,928,共6页
Semiconductor Technology
基金
国家自然科学基金资助项目(60820106001)
关键词
p沟VDMOS
单粒子烧毁
单粒子栅击穿
辐照
线性能量转移
p-channel VDMOS
single-event (SEGR)
irradiation
linear energy transfer (LET) burnout ( SEB )
single-event gate rupture