Photoluminescence of AlxGa1−xAs alloys

L Pavesi, M Guzzi - Journal of Applied Physics, 1994 - pubs.aip.org
A thorough discussion of the various features of the photoluminescence spectra of undoped,
p‐doped and n‐doped Al x Ga1− x As (0≤ x≤ 1) alloys is given. This review covers spectral …

Phonon confinement and electron transport in GaAs-based quantum cascade structures

X Gao, D Botez, I Knezevic - Journal of Applied Physics, 2008 - pubs.aip.org
We present a detailed investigation of the effects that optical-phonon confinement has on the
electronic transport properties of GaAs-based midinfrared multiple-quantum-well (MQW) …

Optical phonons in : Raman spectroscopy

DJ Lockwood, ZR Wasilewski - Physical Review B—Condensed Matter and …, 2004 - APS
A detailed investigation was made using Raman spectroscopy of the longitudinal and
transverse optical phonons in the disordered alloy Al x Ga 1− x As at room temperature …

Microscopic calculation of the electron–optical-phonon interaction in ultrathin GaAs/As alloy quantum-well systems

I Lee, SM Goodnick, M Gulia, E Molinari, P Lugli - Physical Review B, 1995 - APS
We have calculated electron–optical-phonon scattering rates in ultrathin GaAs/Al x Ga 1− x
As alloy quantum-well systems of finite depth, based on a fully microscopic lattice dynamics …

Comprehensive analysis of the composition determination in epitaxial AlxGa1-xAs films: A multitechnique approach

M Gonzalez, G Rozas, LS Alarcon, M Simonetto… - Materials Science in …, 2021 - Elsevier
We present the determination of aluminum concentration x in epitaxial films of Al x Ga 1-x As
grown by Molecular Beam Epitaxy (MBE) on GaAs (100) substrates. A large variety of …

Dispersion of optical and acoustical phonons in the zinc-blende group III-nitride superlattices

DN Talwar - Microelectronic engineering, 1998 - Elsevier
A comprehensive theoretical study of phonons in cubic GaN, AlN, Ga1− xAlxN, and (GaN)
m/(AlN) n superlattices (SLs) is reported using both simple and microscopic models. The …

Effects of induced strain on the Raman spectra of AlxGa1− xAs compounds

A Prado, L Tosi, M Gonzalez, LS Alarcon… - Physica B: Condensed …, 2022 - Elsevier
In this work we study the nuances of composition determination of Al x Ga 1− x As alloys by
Raman spectroscopy. We mainly focus on understanding the effect of induced strain on the …

Spectroscopy of the optical vibrational modes in GaAs/As heterostructures with monolayer-wide As barriers

YA Pusep, SW Da Silva, JC Galzerani, AG Milekhin… - Physical Review B, 1995 - APS
We present the Raman and infrared spectra of GaAs/Al x Ga 1− x As heterostructures with
ultrathin (1 ML thick) Al x Ga 1− x As barriers. The local-mode modification of a one …

Electronic structure of ternary alloy semiconductors

K Shim, DN Talwar, HJ Moh - Solid state communications, 1996 - Elsevier
The results of energy gap variation in ternary alloy semiconductors (A1− xBxC) are reported
within the tight-binding (TB) framework of Koster and Slater by universalizing TB parameters …

Resonance effects in first-and second-order Raman scattering from AlAs

J Wagner, A Fischer, W Braun, K Ploog - Physical Review B, 1994 - APS
First-and second-order Raman scattering has been studied in epitaxial AlAs grown by solid-
source molecular-beam epitaxy. A strong resonant enhancement of dipole-forbidden one …