Lifetime Control of 4.5 kV SiCGT by High-Energy Electron Irradiation
The measured turn-off waveforms of 4.5 kV SiCGTs by using electron irradiation with various electron doses are reported. The turn-off time decreased with an increase in the electron dose. Furthermore, the turn-off characteristics of SiCGTs with p-type drift layer, which assumed the various trap concentrations, are simulated. The relation between the turn-off characteristics and the trap is also investigated. The simulated results show good correlation to measured data and the simulated turn-off times decrease with an increase in the electron dose as well as measured data.
Edouard V. Monakhov, Tamás Hornos and Bengt. G. Svensson
K. Asano et al., "Lifetime Control of 4.5 kV SiCGT by High-Energy Electron Irradiation", Materials Science Forum, Vols. 679-680, pp. 718-721, 2011