Projects per year
Abstract
The spectroscopic techniques of cathodoluminescence (CL) and photoluminescence (PL) are used to study the origin of red emission in β-Ga 2O 3 grown using the edge-defined film-fed grown (EFG) method and hydride vapor phase epitaxy. Room-temperature CL shows red emission peaks from samples doped with Fe, Sn, and Si and from unintentionally doped (UID) samples. Narrow emission lines around 690 nm are seen strongly in the Fe and UID samples. Temperature-dependent PL analysis of the two prominent red emission lines reveals properties similar to the R lines in sapphire for all samples but with different levels of emission intensities. These lines are attributed to Cr 3+ ionic transitions rather than Fe 3+, as reported previously. The most likely origin of the unintentional Cr incorporation is the source material used in the EFG method.
| Original language | English |
|---|---|
| Article number | 2000465 |
| Journal | Physica Status Solidi B |
| Volume | 258 |
| Early online date | 20 Oct 2020 |
| DOIs | |
| Publication status | Published - 28 Feb 2021 |
Keywords
- spectroscopy methods
- gallium oxide
- scanning electron microscope (SEM)
- cathodoluminescence
- photoluminescence
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Dive into the research topics of 'Origin of red emission in β-Ga2O3 analysed by cathodoluminescence and photoluminescence spectroscopy'. Together they form a unique fingerprint.Projects
- 2 Finished
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Quantitative non-destructive nanoscale characterisation of advanced materials
Hourahine, B. (Principal Investigator), Edwards, P. (Co-investigator), Roper, M. (Co-investigator), Trager-Cowan, C. (Co-investigator) & Gunasekar, N. (Research Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/06/17 → 30/11/21
Project: Research
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University Of Strathclyde - Equipment Account
Gachagan, A. (Principal Investigator), He, W. (Principal Investigator), Jaroszynski, D. (Principal Investigator), Martin, R. (Principal Investigator), McArthur, S. (Principal Investigator), McArthur, S. (Principal Investigator), Connolly, P. (Co-investigator), Edwards, P. (Co-investigator), Faulds, K. (Co-investigator), Florence, A. (Co-investigator), Graham, D. (Co-investigator), Leithead, B. (Co-investigator), Sefcik, J. (Co-investigator), Ter Horst, J. (Co-investigator), Trager-Cowan, C. (Co-investigator), Uttamchandani, D. (Co-investigator) & Wark, A. (Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/08/13 → 28/02/23
Project: Research
Datasets
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Data for: "Origin of Red Emission in β-Ga2O3 Analysed by Cathodoluminescence and Photoluminescence Spectroscopy"
Gunasekar, N. (Creator), Edwards, P. (Creator), MacIntyre, H. (Creator), Martin, R. (Creator), Daivasigamani, K. (Sponsor), Sasaki, K. (Sponsor), Subashchandran, S. (Contributor) & Kuramata, A. (Sponsor), University of Strathclyde, 14 Oct 2020
DOI: 10.15129/2a356523-baa7-4776-80ef-a9e6519af352
Dataset