Transient Electrical Characteristics of Electron Irradiated High Blocking Voltage 4H-SiC Pin Diode

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Abstract:

The transient electrical characteristics of the forward recovery and reverse recovery characteristics of lifetime-controlled high blocking voltage 4H-SiC pin diodes by electron irradiation are investigated. Even at a heavy electron dose of 1×1014 cm-2, the forward voltage overshoot of a 4H-SiC pin diode is lower than that of a 2 kV/100 A class Si fast diode. As for the reverse recovery characteristics, small reverse recovery current and fast reverse recovery time are obtained by electron irradiation. The reduction ratio of recovery loss can therefore exceed the increase ratio of steady-state loss by electron irradiation.

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Materials Science Forum (Volumes 717-720)

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965-968

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May 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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