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FEM-based analysis of avalanche ruggedness of high voltage SiC Merged-PiN-Schottky and Junction-Barrier-Schottky diodes
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Shen, Chengjun, Yu, Renze, Jahdi, Saeed, Mellor, Phil, Munagala, Sai Priya, Hopkins, Andrew, Simpson, Nick, Ortiz-Gonzalez, Jose Angel and Alatise, Olayiwola M. (2022) FEM-based analysis of avalanche ruggedness of high voltage SiC Merged-PiN-Schottky and Junction-Barrier-Schottky diodes. Microelectronics Reliability, 138 . 114686. doi:10.1016/j.microrel.2022.114686 ISSN 0026-2714.
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Official URL: http://doi.org/10.1016/j.microrel.2022.114686
Abstract
Through comprehensive experimental measurements and TCAD simulation, it is shown that the avalanche ruggedness of SiC MPS & JBS diodes outperforms that of closely rated Silicon PiN diodes taking advantage of the wide-bandgap properties of SiC which leads to a high ionization and activation energy given the strong covalent bonds. Although the MPS diode structure favours a high reverse blocking voltage with small leakage current and a high current conduction, the localise current crowding caused by the multiple P+ implanted region leads to the avalanche breakdown at lower load currents than the SiC JBS diode. The results of Silvaco TCAD Finite Element modellings have a good agreement with the experimental measurements, indicating that SiC JBS diode can withstand the high junction temperature induced by avalanche in line with the calculated avalanche energy.
Item Type: | Journal Article | ||||||||
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Library of Congress Subject Headings (LCSH): | Silicon carbide, Semiconductors, Diodes, Schottky-barrier | ||||||||
Journal or Publication Title: | Microelectronics Reliability | ||||||||
Publisher: | Elsevier | ||||||||
ISSN: | 0026-2714 | ||||||||
Official Date: | November 2022 | ||||||||
Dates: |
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Volume: | 138 | ||||||||
Article Number: | 114686 | ||||||||
DOI: | 10.1016/j.microrel.2022.114686 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 27 October 2022 | ||||||||
Date of first compliant Open Access: | 28 October 2022 | ||||||||
RIOXX Funder/Project Grant: |
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