Radiation hardness characteristic of N-implanted and F-implanted SIMOX/NMOSFET

Radiation hardness of SIMOX(separation by implanted oxygen)/NMOSFET by implanting N and F ion has been carefully studied in this paper.Both N and F ion implantation can reduce hole traps in the buried oxide and the interfacial regions,which consequently improves the radiation hardness,especially under high dose radiation conditions.Moreover,experimental data show that the higher dose of the N and F ion implantation is,the better radiation hardness is achieved.In order to minimize the influence on the threshold voltage of devices,it is important to choose suitable implantation dose and energy of N or F implantation that have smaller impact on the preradiation device performance.

Radiation hardness of SIMOX(separation by implanted oxygen)/NMOSFET by implanting N and F ion has been carefully studied in this paper.Both N and F ion implantation can reduce hole traps in the buried oxide and the interfacial regions,which consequently improves the radiation hardness,especially under high dose radiation conditions.Moreover,experimental data show that the higher dose of the N and F ion implantation is,the better radiation hardness is achieved.In order to minimize the influence on the threshold voltage of devices,it is important to choose suitable implantation dose and energy of N or F implantation that have smaller impact on the preradiation device performance.

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Institute of Semicongductors,CAS