Iron dopant energy levels in <b>β</b>-Ga2O3-Reference-Cited by-同舟云学术

Iron dopant energy levels in β-Ga2O3

Published:2024-06-17 Issue:25 Volume:124 Page:
ISSN:0003-6951
Container-title:Applied Physics Letters
language:en
Short-container-title:

Author:

Angeloni Louis A.¹^ORCID,Shan I.-J.¹^ORCID,Leach J. H.²^ORCID,Schroeder W. Andreas¹^ORCID

Affiliation:

1. Department of Physics, University of Illinois Chicago 1 , 845 W. Taylor St., Chicago, Illinois 60607, USA

2. Kyma Technologies, Inc. 2 , 8829 Midway West Rd., Raleigh, North Carolina 27617, USA

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 providing an estimate of 100 ps for the conduction band electron lifetime.

Funder

U.S. Department of Energy

Publisher

AIP Publishing

Link

https://pubs.aip.org/aip/apl/article-pdf/doi/10.1063/5.0213263/20006712/252104_1_5.0213263.pdf

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