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一种新的抗总剂量辐射加固P沟道VDMOS终端结构
引用本文:唐昭焕,刘嵘侃,谭开洲,罗俊,胡刚毅,李儒章,任华平,王斌.一种新的抗总剂量辐射加固P沟道VDMOS终端结构[J].半导体学报,2014,35(5):054005-4.
作者姓名:唐昭焕  刘嵘侃  谭开洲  罗俊  胡刚毅  李儒章  任华平  王斌
作者单位:Science and Technology on Analog Integrated Circuit Laboratory;Sichuan Institute of Solid-State Circuits,China Electronics Technology Group Corp;Quality and Safety Detecting Centre of Chongqing Special Equipment
基金项目:supported by the Pre-Research Foundation(No.51311050202)
摘    要:Using positive surface charge instead of traditional γ-ray total dose irradiation, the electric field distribution of a P-channel VDMOS terminal has been analyzed. A novel terminal structure for improving the total dose irradiation hardened of P-channel VDMOS has been proposed, and the structure is simulated and demonstrated with a -150 V P-channel VDMOS. The results show that the peak current density is reduced from 5.51 × 10^3 A/cm^2 to 2.01 × 10^3 A/cm^2, and the changed value of the breakdown voltage is 2.5 V at 500 krad(Si). Especially, using 60Co and X-ray to validate the results, which strictly match with the simulated values, there is not any added mask or process to fabricate the novel structure, of which the process is compatible with common P-channel VDMOS processes. The novel terminal structure can be widely used in total irradiation hardened P-channel VDMOS design and fabrication, which holds a great potential application in the space irradiation environment.

关 键 词:VDMOS器件  总剂量辐照  终端结构  硬化  DMOS工艺  空间辐射环境  X-射线  P沟道
修稿时间:1/1/2014 12:00:00 AM

A novel terminal structure for total dose irradiation hardened of a P-VDMOS
Tang Zhaohuan,Liu Rongkan,Tan Kaizhou,Luo Jun,Hu Gangyi,Li Ruzhang,Ren Huaping and Wang Bin.A novel terminal structure for total dose irradiation hardened of a P-VDMOS[J].Chinese Journal of Semiconductors,2014,35(5):054005-4.
Authors:Tang Zhaohuan  Liu Rongkan  Tan Kaizhou  Luo Jun  Hu Gangyi  Li Ruzhang  Ren Huaping and Wang Bin
Affiliation:Science and Technology on Analog Integrated Circuit Laboratory, Chongqing 400060, China;Sichuan Institute of Solid-State Circuits, China Electronics Technology Group Corp, Chongqing 400060, China;Science and Technology on Analog Integrated Circuit Laboratory, Chongqing 400060, China;Sichuan Institute of Solid-State Circuits, China Electronics Technology Group Corp, Chongqing 400060, China;Science and Technology on Analog Integrated Circuit Laboratory, Chongqing 400060, China;Science and Technology on Analog Integrated Circuit Laboratory, Chongqing 400060, China;Quality and Safety Detecting Centre of Chongqing Special Equipment, Chongqing 401121, China;Sichuan Institute of Solid-State Circuits, China Electronics Technology Group Corp, Chongqing 400060, China
Abstract:P-channel VDMOS total dose irradiation hardened stop field limited ring breakdown voltage
Keywords:P-channel VDMOS  total dose irradiation hardened  stop field limited ring  breakdown voltage
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