2024
DOI: 10.1063/5.0213263
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Iron dopant energy levels in β-Ga2O3

Louis A. Angeloni,
I.-J. Shan,
J. H. Leach
et al.

Abstract: The energetic positions of the two Fe dopant levels in the bandgap of β-Ga2O3 are determined to be at 3.05(±0.05) and 3.85(±0.05) eV below the conduction band minimum from transmission measurements employing a sub-picosecond tunable ultraviolet laser radiation source. A further measurement of the quantum efficiency of photoelectron emission from the Fe:Ga2O3(010) photocathode is consistent with the obtained absorption data and a dominant optical phonon assisted Franck–Condon emission mechanism, while also prov… Show more

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