1. Bandgap engineering of spinel-structured oxide semiconductor alloys.
- Author
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Ota, Yuichi, Kaneko, Kentaro, Onuma, Takeyoshi, and Fujita, Shizuo
- Subjects
ALLOYS ,SEMICONDUCTORS ,ENGINEERING ,OXIDES ,SPINEL - Abstract
We investigated bandgap engineering of spinel-structured Mg B
2 O4 (B = Al, Ga, In) alloys. The trend of bandgap change was tunable from approximated 7.8–3.6 eV by substituting group III cation atoms in Mg B2 O4 . To evaluate the doping possibility, we have calculated the natural band alignment and doping pinning energy of the normal and inverse spinel structures of Mg B2 O4 alloys. The calculated doping pinning energies show that spinel-structured Mg B2 O4 alloys can potentially control the electron concentration, but hole doping is difficult. Our computational results are expected to provide new insights into the doping control of ultra-wide bandgap semiconductors. [ABSTRACT FROM AUTHOR]- Published
- 2024
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