(AlxGa1-x) 2O3-based materials: Growth, properties, and device applications

H Li, Z Wu, S Wu, P Tian, Z Fang - Journal of Alloys and Compounds, 2023 - Elsevier
In recent years, the (Al x Ga 1-x) 2 O 3 materials have attracted intense research interest due
to their considerable potentials in the fabrication of deep-ultraviolet optoelectronic and high …

[HTML][HTML] Alloyed β-(AlxGa1− x) 2O3 bulk Czochralski single β-(Al0. 1Ga0. 9) 2O3 and polycrystals β-(Al0. 33Ga0. 66) 2O3, β-(Al0. 5Ga0. 5) 2O3), and property trends

J Jesenovec, B Dutton, N Stone-Weiss… - Journal of Applied …, 2022 - pubs.aip.org
In this work, bulk Czochralski-grown single crystals of 10 mol.% Al 2 O 3 alloyed β-Ga 2 O 3—
monoclinic 10% AGO or β-(Al 0.1 Ga 0.9) 2 O 3—are obtained, which show+ 0.20 eV …

Strain and Composition Dependencies of the Near-Band-Gap Optical Transitions in Monoclinic Alloys with Coherent Biaxial In-Plane Strain on  …

R Korlacki, M Hilfiker, J Knudtson, M Stokey, U Kilic… - Physical Review …, 2022 - APS
The bowing of the energy of the three lowest band-to-band transitions in β-(Al x Ga 1− x) 2 O
3 alloys is resolved using a combined density-functional theory (DFT) and generalized …

First-principles study on the structural and electronic properties of β-(AlxGa1-x) 2O3 alloy

CZ Zhao, KY Zheng - Journal of Physics and Chemistry of Solids, 2024 - Elsevier
The generalized gradient approximation plus U parameter method is adopted to study the
structural and electronic properties of β-(Al x Ga 1-x) 2 O 3. The results show that the bond …

Hybrid density functional theory study of substitutional Gd in β-Ga2O3

E Welch, P Borges, L Scolfaro - Physica B: Condensed Matter, 2023 - Elsevier
Substitutional Gd alloying in β-Ga 2 O 3 is studied using hybrid density functional theory.
Calculations of structural properties reveal a monotonic increase in lattice parameters …

Assessment of bonding characteristic of β-(AlxGa1− x) 2O3 alloys from photoluminescence and x-ray absorption near edge spectroscopy

J Bhattacharjee, RK Gupta, SD Singh - Applied Physics Letters, 2023 - pubs.aip.org
Bonding characteristics of the β-(AlxGa1− x) 2O3 alloy have been assessed from red
luminescence and x-ray absorption near edge spectroscopy (XANES). Red luminescence …

Determination of Al occupancy and local structure for β-(AlxGa1− x) 2O3 alloys across nearly full composition range from Rietveld analysis

J Bhattacharjee, A Sagdeo, SD Singh - Applied Physics Letters, 2022 - pubs.aip.org
Al occupancy and local structure (bond lengths and bond angles) for monoclinic β-(Al x Ga
1− x) 2 O 3 alloys, with Al compositions (x) up to 90%, have been determined from Rietveld …

Temperature dependence of red luminescence in pure β-Ga2O3: An estimation of electron-phonon interaction

J Bhattacharjee, SD Singh - Solid State Communications, 2022 - Elsevier
Abstract Electron-Phonon (e-ph) interactions have been studied from temperature
dependent photoluminescence (PL) of red emission line originating from Cr 3+ ions …

Observation of mixed-mode behavior of Raman active phonon modes for β-(AlxGa1− x) 2O3 alloys

J Bhattacharjee, SD Singh - Applied Physics Letters, 2023 - pubs.aip.org
Raman spectroscopy has been used to investigate the phonon mode behavior of a β-(Al x
Ga 1− x) 2 O 3 alloy up to Al compositions of x= 0.474. The alloy displays a mixed-mode …

Probing Bond Length and Compositional Disorder in β‐(AlxGa1−x)2O3 Alloys Using Extended X‐Ray Absorption Fine Structure Spectroscopy

J Bhattacharjee, R Urkude… - physica status solidi (RRL) …, 2024 - Wiley Online Library
Local structure of β‐(AlxGa1− x) 2O3 alloys with Al contents is determined from extended X‐
ray absorption fine structure spectroscopy (EXAFS). A model to fit the EXAFS data for …