Abstract
The work is devoted to the study of the influence of the structural features of the crystal on the resistance of DMOS transistors under the influence of ionizing radiation. A comparison of the results of instrumentation and technological modeling of commercially available p-channel DMOS transistors designed for the maximum allowable drain-source voltage of 60V and 100V is carried out. Modeling was carried out in the TCAD environment, all the basic physical principles of the structure under study were taken into account with the help of appropriate mathematical models. The obtained values of the model's electrical parameters showed full compliance with the normative values. The critical points of the crystal design that affect the performance of transistors in the presence of ionizing radiation from outer space are determined. The influence of the electric field strength in the crystal body on the resistance to ionizing radiation is estimated. It is shown that the actual values of the electric field strength in the region of the p-n junction do not exceed the values of the critical strength, having a margin of more than 1.22 times.
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