On the nature of majority and minority traps in β-Ga2O3: A review

M Labed, N Sengouga, CV Prasad, M Henini… - Materials Today …, 2023 - Elsevier
In the last decade, researchers and commercial companies have paid great attention to
ultrawide bandgap semiconductors especially gallium oxide (Ga 2 O 3). Ga 2 O 3 has very …

On the origin of the yellow luminescence band in GaN

MA Reshchikov - physica status solidi (b), 2023 - Wiley Online Library
The yellow luminescence (YL) band with a maximum at 2.2 eV is the dominant defect‐
related luminescence in unintentionally doped GaN. The discovery of the mechanism …

Lattice expansion in Rb-doped hybrid organic–inorganic perovskite crystals resulting in smaller band-gap and higher light-yield scintillators

F Maddalena, MH Mahyuddin, D Kowal… - Inorganic …, 2023 - ACS Publications
Two-dimensional hybrid-organic–inorganic perovskite (2D-HOIP) lead bromide perovskite
crystals have demonstrated great potential as scintillators with high light yields and fast …

Photoluminescence spectra of point defects in semiconductors: Validation of first-principles calculations

Y **, M Govoni, G Wolfowicz, SE Sullivan… - Physical Review …, 2021 - APS
Optically and magnetically active point defects in semiconductors are interesting platforms
for the development of solid state quantum technologies. Their optical properties are usually …

Reliability of commercial UVC LEDs: 2022 state-of-the-art

N Trivellin, D Fiorimonte, F Piva, M Buffolo, C De Santi… - Electronics, 2022 - mdpi.com
With this study, we report on the reliability of the most recent commercial UVC LED devices.
The current COVID-19 pandemic urged the development of antiviral technologies, and one …

Dual nature of the acceptor in GaN: Evidence from photoluminescence

MA Reshchikov, M Vorobiov, O Andrieiev… - Physical Review B, 2023 - APS
Experimental studies of Be-doped GaN by photoluminescence (PL) confirmed theoretical
predictions that the Be Ga acceptor in GaN has dual nature, namely a coexistence of a deep …

Identity of the shallowest acceptor in GaN

MA Reshchikov, DO Demchenko, B McEwen… - Physical Review B, 2025 - APS
The Be-related ultraviolet luminescence band with a maximum at about 3.38 eV in GaN: Be
is caused by the shallowest acceptor in GaN with the−/0 transition level at 0.113 eV above …

Photoluminescence related to Ca in GaN

MA Reshchikov, DO Demchenko, M Vorobiov… - Physical Review B, 2022 - APS
The Ca Ga acceptor in GaN was studied using photoluminescence (PL) experiments and
first-principles calculations. The experimentally found–/0 transition level of the Ca Ga at …

Enhanced luminescence efficiency in Eu-doped GaN superlattice structures revealed by terahertz emission spectroscopy

F Murakami, A Takeo, B Mitchell, V Dierolf… - Communications …, 2023 - nature.com
Abstract Eu-doped Gallium nitride (GaN) is a promising candidate for GaN-based red light-
emitting diodes, which are needed for future micro-display technologies. Introducing a …

Chemiresistive NH 3 detection at sub-zero temperatures by polypyrrole-loaded Sn 1− x Sb x O 2 nanocubes

N Chakraborty, S Mondal - Materials Horizons, 2022 - pubs.rsc.org
Chemiresistive gas sensors operate mainly at high temperatures, primarily due to the need
of energy for surface adsorption–desorption of analytes. As a result, the operating …