2022
DOI: 10.1109/ojies.2022.3143946
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Impact of Carriers Injection Level on Transients of Discrete and Paralleled Silicon and 4H-SiC NPN BJTs

Abstract: The 4H-SiC vertical NPN BJTs are attractive power devices with potentials to be used as high power switching devices with high voltage ratings in range of 1.7 kV and high operating temperatures. In this paper, the advantages of the 4H-SiC NPN BJTs in terms of switching transients and current gain over their silicon counterparts is illustrated by means of extensive experimental measurements and modelling, including investigation of high level injection, as a common phenomenon in bipolar devices that influences … Show more

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Cited by 4 publications
(1 citation statement)
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“…1. This effectively enables to become one of the few available bipolar SiC devices [5,6] The space between P-N junctions in the MPS structure pinches off at small reverse bias voltage where a potential barrier is formed under the p+ region to protect the Schottky contact from the high electric field. The greatly reduction of electric field at Schottky contact suppress both the Schottky barrier lowering and the surge of energy states at Schottky contact, both achieves a further reduction of leakage current in SiC MPS than Silicon MPS as the absence of surface defects in the latter devices.…”
Section: Introductionmentioning
confidence: 99%
“…1. This effectively enables to become one of the few available bipolar SiC devices [5,6] The space between P-N junctions in the MPS structure pinches off at small reverse bias voltage where a potential barrier is formed under the p+ region to protect the Schottky contact from the high electric field. The greatly reduction of electric field at Schottky contact suppress both the Schottky barrier lowering and the surge of energy states at Schottky contact, both achieves a further reduction of leakage current in SiC MPS than Silicon MPS as the absence of surface defects in the latter devices.…”
Section: Introductionmentioning
confidence: 99%