A Displacement Damage-Based Method for Suppressing the Formation of Oxide Trapped Charges

Abstract

A method for inhibiting the formation of oxide trapped charges based on displacement damage is provided. The invention relates to the field of space environmental effects, nuclear science and appliedtechnology, and solves the radiation damage performance of electronic devices by oxide trapped positive charges and an interface state. The method comprises determining the farthest distance b and theclosest distance c from a passivation layer in an electronic component to the surface; calculating the range t1 of a pre-irradiated incident particle; calculating the ionizing absorbed dose Id1 and the displacement absorbed dose Dd1 of the incident particle in the passivation layer; calculating the value of Log[(Id+Dd) / Dd]; perofrming pre-irradiation and determining the irradiation injection amount [phi]1; calculating the incident depth t2 of an ionizing radiation incident particle; calculating the ionizing absorbed dose Id2 and the displacement absorbed dose Dd2 of the incident particle in the passivation layer; calculating the value of log[(Id2+Dd2) / Dd2];and perform ionizing irradiation. The method changes the inherent displacement defect state in a sample, inhibits the formation of oxide trapped positive charges, and is simple in steps and easy to operate. The method is applied to the research of space environmental effects of electronic components and the anti-radiation reinforcement technology.

Description

technical field [0001] The invention relates to the formation and evolution mechanism of ionizing radiation defects, and belongs to the field of space environment effects, nuclear science and application technology. Background technique [0002] With the development of science and technology, my country's aerospace industry has made great progress and has become one of the aerospace powers. All kinds of spacecraft are closely related to our life and safety. Electronic components used in spacecraft will inevitably be affected by the space environment during their in-orbit service. These factors include solar cosmic ray particles, galactic cosmic ray particles, and radiation environments such as the Earth's radiation belts. Electronic components play a vital role in the electronic control system and information system of a spacecraft. Various radiation environments in space will lead to its performance degradation, abnormal function and even failure. [0003] Space charged r...

AI Technical Summary

Problems solved by technology

Oxide trapping charges and interface states will change the surface recombination rate of carriers, thereby affecting the minority carrier lifetime, leading to degradation of the performance of electronic devices

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