Monolithic bidirectional 2DHG diamond switch
Abstract This work presents a monolithic bidirectional two-dimensional hole gas (2DHG) diamond switch capable of bidirectional blocking operation for the first time. All essential operation modes unique to bidirectional switches were demonstrated. The R on was estimated to be 8.2 mΩ cm 2 , and the bidirectional breakdown voltage reaches 290 V. Consequently, the bidirectional 2DHG diamond switch achieves an R on less than one-tenth of that of the deep-depletion-type switch while maintaining higher breakdown voltage. These results suggest that monolithic bidirectional 2DHG diamond switches are promising candidates for on-board chargers employing matrix converters or three-level T-type converters.
Authors
- Nobutaka Oi (ORCID: https://orcid.org/0000-0002-0163-561X)
- Sora Kawai (ORCID: https://orcid.org/0000-0001-8957-8105)
- Tatsuya Fujishima
- Kosuke Ota (ORCID: https://orcid.org/0000-0002-8929-9322)
- Shunsuke Shoji
- Kenji Ueda
- Ryo Yoshida
- Akihiko Watanabe
- Ichiro Omura
Institutions
- TEPCO (Japan) (JP)
- Waseda University (JP)
- J-Power (Japan) (JP)
- The University of Kitakyushu (JP)
- Kyushu Institute of Technology (JP)
Publication Details
- Journal
- Applied Physics Express
- Published
- 2026-04-01
- DOI
- https://doi.org/10.35848/1882-0786/ae5bdd
- Primary Topic
- Diamond and Carbon-based Materials Research
- Type
- article
- Field-Weighted Citation Impact
- 0.00