文章基本信息

标题：The effects induced by the gamma-ray responsible for the threshold voltage shift of commercial p-channel power VDMOSFET
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作者：Obrenović, Marija D. ; Pejović, Milić M. ; Lazarević, Đorđe R. 等
期刊名称：Nuclear Technology and Radiation Protection
印刷版ISSN：1451-3994
出版年度：2018
卷号：33
期号：1
页码：81-86
DOI：10.2298/NTRP1801081O
出版社：VINČA Institute of Nuclear Sciences
摘要：The variations in the threshold voltage shift in p-channel power VDMOSFET during the gamma ray irradiation was investigated in the dose range from 10 to 100 Gy. The investigations were performed without the gate bias and with 5 V gate bias. The devices with 5 V gate bias exhibit a linear dependence between the threshold voltage shift and the radiation dose. The densities of radiation-induced fixed and switching traps were determined from the sub-threshold I-V characteristics using the midgap technique. It was shown that the creation of fixed traps is dominant during the irradiation. The possible mechanisms responsible for the fixed and switching traps creation are also analyzed in this paper. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 171007]
关键词：VDMOSFET; gamma ray irradiation; threshold voltage shift; radiation dose