Optical absorption of Fe in doped Ga2O3
Abstract
This study investigates the Fe impurities believed to act as deep acceptors that contribute to electrical compensation of the n-type conductivity in as-grown Ga2O3. A variation of the traditional optical absorption measurement, photoinduced electron paramagnetic resonance (EPR) spectroscopy, is used to identify charge transitions in bulk Fe-doped and Mg-doped Ga2O3 with the support of hybrid functional calculations. Steady-state photo-EPR measurements show that the first optically induced change in Fe3+ occurs at 1.2 eV, significantly larger than the calculated defect levels for Fe. However, the optical cross section spectrum determined from time-dependent photo-EPR measurements compare well with a calculated cross section spectrum for the Fe2+-to-Fe3+ transition when the relaxation energy predicted from the density functional theory is folded into the model. In conclusion, this work explicitly demonstrates the need for an accurate accounting of electron-lattice coupling when interpreting optically induced phenomena.
- Authors:
-
- Univ. of Alabama at Birmingham, Birmingham, AL (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1577937
- Alternate Identifier(s):
- OSTI ID: 1571833
- Report Number(s):
- LLNL-JRNL-798701
Journal ID: ISSN 0021-8979; 958413; TRN: US2102667
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Applied Physics
- Additional Journal Information:
- Journal Volume: 126; Journal Issue: 16; Journal ID: ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Bhandari, Suman, Zvanut, M. E., and Varley, J. B. Optical absorption of Fe in doped Ga2O3. United States: N. p., 2019.
Web. doi:10.1063/1.5124825.
Bhandari, Suman, Zvanut, M. E., & Varley, J. B. Optical absorption of Fe in doped Ga2O3. United States. https://doi.org/10.1063/1.5124825
Bhandari, Suman, Zvanut, M. E., and Varley, J. B. Fri .
"Optical absorption of Fe in doped Ga2O3". United States. https://doi.org/10.1063/1.5124825. https://www.osti.gov/servlets/purl/1577937.
@article{osti_1577937,
title = {Optical absorption of Fe in doped Ga2O3},
author = {Bhandari, Suman and Zvanut, M. E. and Varley, J. B.},
abstractNote = {This study investigates the Fe impurities believed to act as deep acceptors that contribute to electrical compensation of the n-type conductivity in as-grown Ga2O3. A variation of the traditional optical absorption measurement, photoinduced electron paramagnetic resonance (EPR) spectroscopy, is used to identify charge transitions in bulk Fe-doped and Mg-doped Ga2O3 with the support of hybrid functional calculations. Steady-state photo-EPR measurements show that the first optically induced change in Fe3+ occurs at 1.2 eV, significantly larger than the calculated defect levels for Fe. However, the optical cross section spectrum determined from time-dependent photo-EPR measurements compare well with a calculated cross section spectrum for the Fe2+-to-Fe3+ transition when the relaxation energy predicted from the density functional theory is folded into the model. In conclusion, this work explicitly demonstrates the need for an accurate accounting of electron-lattice coupling when interpreting optically induced phenomena.},
doi = {10.1063/1.5124825},
journal = {Journal of Applied Physics},
number = 16,
volume = 126,
place = {United States},
year = {Fri Oct 25 00:00:00 EDT 2019},
month = {Fri Oct 25 00:00:00 EDT 2019}
}
Web of Science
Figures / Tables:
Works referenced in this record:
Electrical Properties, Deep Levels and Luminescence Related to Fe in Bulk Semi-Insulating β-Ga 2 O 3 Doped with Fe
journal, January 2019
- Polyakov, A. Y.; Smirnov, N. B.; Schemerov, I. V.
- ECS Journal of Solid State Science and Technology, Vol. 8, Issue 7
Device-Quality $\beta$-Ga$_{2}$O$_{3}$ Epitaxial Films Fabricated by Ozone Molecular Beam Epitaxy
journal, February 2012
- Sasaki, Kohei; Kuramata, Akito; Masui, Takekazu
- Applied Physics Express, Vol. 5, Issue 3
Iron and intrinsic deep level states in Ga 2 O 3
journal, January 2018
- Ingebrigtsen, M. E.; Varley, J. B.; Kuznetsov, A. Yu.
- Applied Physics Letters, Vol. 112, Issue 4
Impact of proton irradiation on conductivity and deep level defects in β-Ga 2 O 3
journal, February 2019
- Ingebrigtsen, M. E.; Kuznetsov, A. Yu.; Svensson, B. G.
- APL Materials, Vol. 7, Issue 2
Ir 4+ ions in β-Ga 2 O 3 crystals: An unintentional deep donor
journal, January 2019
- Lenyk, C. A.; Giles, N. C.; Scherrer, E. M.
- Journal of Applied Physics, Vol. 125, Issue 4
Importance of Transition Probability Values for Accurate EPR Concentration Measurements
journal, September 1994
- Siebert, Dieter.; Dahlem, Juergen.; Nagy, Vitaly.
- Analytical Chemistry, Vol. 66, Issue 17
Electron paramagnetic resonance study of neutral Mg acceptors in β-Ga 2 O 3 crystals
journal, August 2017
- Kananen, B. E.; Halliburton, L. E.; Scherrer, E. M.
- Applied Physics Letters, Vol. 111, Issue 7
On the application of the photo-EPR technique to the studies of photoionization, DAP recombination, and non-radiative recombination processes
journal, July 1985
- Godlewski, M.
- physica status solidi (a), Vol. 90, Issue 1
Enhancement of responsivity in solar-blind β-Ga2O3 photodiodes with a Au Schottky contact fabricated on single crystal substrates by annealing
journal, June 2009
- Suzuki, Rikiya; Nakagomi, Shinji; Kokubun, Yoshihiro
- Applied Physics Letters, Vol. 94, Issue 22
Defect States Determining Dynamic Trapping-Detrapping in β-Ga 2 O 3 Field-Effect Transistors
journal, January 2019
- Polyakov, Alexander Y.; Smirnov, Nikolai B.; Shchemerov, Ivan V.
- ECS Journal of Solid State Science and Technology, Vol. 8, Issue 7
A survey of acceptor dopants for β -Ga 2 O 3
journal, April 2018
- Lyons, John L.
- Semiconductor Science and Technology, Vol. 33, Issue 5
Role of self-trapping in luminescence and -type conductivity of wide-band-gap oxides
journal, February 2012
- Varley, J. B.; Janotti, A.; Franchini, C.
- Physical Review B, Vol. 85, Issue 8
A review of Ga 2 O 3 materials, processing, and devices
journal, March 2018
- Pearton, S. J.; Yang, Jiancheng; Cary, Patrick H.
- Applied Physics Reviews, Vol. 5, Issue 1
Compensation and hydrogen passivation of magnesium acceptors in β-Ga 2 O 3
journal, July 2018
- Ritter, Jacob R.; Huso, Jesse; Dickens, Peter T.
- Applied Physics Letters, Vol. 113, Issue 5
First-principles calculations for point defects in solids
journal, March 2014
- Freysoldt, Christoph; Grabowski, Blazej; Hickel, Tilmann
- Reviews of Modern Physics, Vol. 86, Issue 1
Donors and deep acceptors in β-Ga 2 O 3
journal, August 2018
- Neal, Adam T.; Mou, Shin; Rafique, Subrina
- Applied Physics Letters, Vol. 113, Issue 6
Gallium oxide (Ga 2 O 3 ) metal-semiconductor field-effect transistors on single-crystal β-Ga 2 O 3 (010) substrates
journal, January 2012
- Higashiwaki, Masataka; Sasaki, Kohei; Kuramata, Akito
- Applied Physics Letters, Vol. 100, Issue 1
2.44 kV Ga2 O3 vertical trench Schottky barrier diodes with very low reverse leakage current
conference, December 2018
- Li, Wenshen; Hu, Zongyang; Nomoto, Kazuki
- 2018 IEEE International Electron Devices Meeting (IEDM)
First Principles Study on the Electronic Properties of Cr, Fe, Mn and Ni Doped β-Ga<sub>2</sub>O<sub>3</sub>
journal, June 2012
- He, Hao; Li, Wei; Xing, Huai Zhong
- Advanced Materials Research, Vol. 535-537
Kinetics of charge carrier recombination in crystals
journal, October 2018
- Huynh, T. T.; Lem, L. L. C.; Kuramata, A.
- Physical Review Materials, Vol. 2, Issue 10
Evidence for formation of self-trapped excitons in a β-Ga 2 O 3 single crystal : Evidence for formation of self-trapped excitons in a β-Ga
journal, November 2015
- Yamaoka, Suguru; Nakayama, Masaaki
- physica status solidi (c), Vol. 13, Issue 2-3
Donor structure and electric transport mechanism in
journal, October 2003
- Yamaga, Mitsuo; Víllora, Encarnación G.; Shimamura, Kiyoshi
- Physical Review B, Vol. 68, Issue 15
Bulk crystal growth of Ga2O3
conference, March 2018
- Kuramata, Akito; Koshi, Kimiyoshi; Watanabe, Shinya
- Oxide-based Materials and Devices IX
Photoionization cross-section analysis for a deep trap contributing to current collapse in GaN field-effect transistors
journal, July 2004
- Pässler, Roland
- Journal of Applied Physics, Vol. 96, Issue 1
Ga2O3 thin film for oxygen sensor at high temperature
journal, May 2001
- Ogita, M.; Higo, K.; Nakanishi, Y.
- Applied Surface Science, Vol. 175-176
Correlation between blue luminescence intensity and resistivity in β -Ga 2 O 3 single crystals
journal, July 2013
- Onuma, T.; Fujioka, S.; Yamaguchi, T.
- Applied Physics Letters, Vol. 103, Issue 4
Oxygen vacancies and donor impurities in β-Ga2O3
journal, October 2010
- Varley, J. B.; Weber, J. R.; Janotti, A.
- Applied Physics Letters, Vol. 97, Issue 14
Electron paramagnetic resonance characterization of Cr3+ impurities in a β-Ga2O3 single crystal
journal, March 2003
- Yeom, T. H.; Kim, I. G.; Lee, S. H.
- Journal of Applied Physics, Vol. 93, Issue 6
Correlation of Zero-Field Splittings and Site Distortions. IX. Fe3+ and Cr3+ in β -Ga2O3
journal, January 1987
- Büscher, R.; Lehmann, G.
- Zeitschrift für Naturforschung A, Vol. 42, Issue 1
Works referencing / citing this record:
Optical transitions for impurities in Ga 2 O 3 as determined by photo-induced electron paramagnetic resonance spectroscopy
journal, February 2020
- Bhandari, Suman; Zvanut, M. E.
- Journal of Applied Physics, Vol. 127, Issue 6
Deep donors and acceptors in β-Ga 2 O 3 crystals: Determination of the Fe 2+/3+ level by a noncontact method
journal, December 2019
- Lenyk, C. A.; Gustafson, T. D.; Halliburton, L. E.
- Journal of Applied Physics, Vol. 126, Issue 24
Figures / Tables found in this record: