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In this paper we report on a novel structure of a 4H-SiC bipolar junction transistor with a double base epilayer that is continuously grown.The measured dc common-emitter current gain is 16.8 at IC = 28.6 mA(J C = 183.4 A/cm2),and it increases with the collector current density increasing.The specific on-state resistance(Rsp-on) is32.3mΩ·cm 2 and the open-base breakdown voltage reaches 410 V.The emitter N-type specific contact resistance and N + emitter layer sheet resistance are 1.7×10-3 Ω·cm2 and 150 /,respectively.
In this paper we report on a novel structure of a 4H-SiC bipolar junction transistor with a double base epilayer that is continuously grown. The measured dc common-emitter current gain is 16.8 at IC = 28.6 mA (JC = 183.4 A / cm2) , and it increases with the collector current density increasing. The specific on-state resistance (Rsp-on) is 32.3 mΩ · cm 2 and the open-base breakdown voltage reaches 410 V. The emitter N-type specific contact resistance and N + emitter layer sheet resistance are 1.7 × 10-3 Ω · cm2 and 150 /, respectively.