Measurement of spin-polarized photoemission from wurtzite and zinc blende gallium nitride photocathodes

SJ Levenson, MB Andorf, BD Dickensheets… - Applied Physics …, 2024 - pubs.aip.org
Spin-polarized photoemission from wurtzite and zinc blende gallium nitride (GaN)
photocathodes has been observed and measured. The p-doped GaN photocathodes were …

Effect of SiN Treatment on Optical Properties of In x Ga1−x N/GaN MQW Blue LEDs

Z Benzarti, T Sekrafi, Z Bougrioua, A Khalfallah… - Journal of Electronic …, 2017 - Springer
In this paper, Si-doped GaN template layer and nitride-based multiple quantum well (MQW)
light-emitting diodes (LEDs) with conventional GaN buffer layer and GaN buffer layer using …

Controlled nano-roughening of the GaN surface by post-growth thermal annealing

W Malek, M Bouzidi, N Chaaben, W Belgacem… - Applied Surface …, 2024 - Elsevier
GaN-based semiconductor structures have been widely used in photonic, electronic, and
optoelectronic devices. However, due to the lack of lattice-matched substrates for GaN …

Time-resolved photoluminescence and photoreflectance spectroscopy of GaN layers grown on SiN-treated sapphire substrate: optical properties evolution at different …

M Bouzidi, S Soltani, Z Chine, A Rebey, MK Shakfa - optical materials, 2017 - Elsevier
In this paper, we present a systematic study of the optical properties evolution of GaN films
during the complete growth process on SiN-treated sapphire substrates by atmospheric …

Structural and optical characterizations of cubic GaN layers grown by MOVPE on GaAs (114) substrate

S Othmani, IB Ali, N Chaaben, M Bouzidi, M Al Huwayz… - Optical Materials, 2024 - Elsevier
GaN-based structures have been employed in a range of electronic and optoelectronic
applications. Despite the extensive utilization of hexagonal GaN (h-GaN), certain devices …

Effects of the diameter of thermally generated nanopits on carrier dynamics in AlGaN/GaN heterostructures

M Bouzidi, W Malek, N Chaaben… - Optical …, 2022 - spiedigitallibrary.org
The size and density of nanopits, generated at the surface of their top layer, strongly affect
the electrical and optical properties of AlGaN-based structures. Therefore, the control of the …

Study of the partial decomposition of GaN layers grown by MOVPE with different coalescence degree

H Bouazizi, N Chaaben, Y El Gmili, A Bchetnia… - Journal of Crystal …, 2016 - Elsevier
We investigated the partial decomposition of GaN layers grown with different coalescence
degrees by atmospheric pressure metal organic vapor phase epitaxy (AP-MOVPE) on SiN …

Optical characterization by photoreflectance of GaN after its partial thermal decomposition

W Malek, A Kahouli, M Bouzidi, N Chaaben… - Optik, 2021 - Elsevier
In the current study, we investigated the partial decomposition of GaN layers grown on SiN-
treated sapphire substrate in an atmospheric pressure metal organic vapor phase epitaxy …

In situ spectral reflectance analysis of the early stages of GaN thermal decomposition

W Malek, M Bouzidi, N Chaaben, AS Alshammari… - Optik, 2022 - Elsevier
The decomposition of GaN layers have been in situ monitored by a spectral reflectance
system. A particular interest is given to the early stages of GaN decomposition. The analysis …

Photoreflectance investigation of exciton-acoustic phonon scattering in GaN grown by MOVPE

M Bouzidi, S Soltani, I Halidou, Z Chine, B El Jani - Solid State Sciences, 2016 - Elsevier
In this paper, we report a systematic investigation of the near band edge (NBE) excitonic
states in GaN using low temperature photoluminescence (PL) and photoreflectance (PR) …