Effect of wetting layers on the strain and electronic structure of InAs self-assembled quantum dots

S Lee, OL Lazarenkova, P von Allmen, F Oyafuso… - Physical Review B …, 2004 - APS
The effect of wetting layers on the strain and electronic structure of InAs self-assembled
quantum dots grown on GaAs is investigated with an atomistic valence-force-field model and …

Tuning of near infrared excitonic emission from InAs quantum dots by controlling the sub-monolayer coverage

S Mukherjee, A Pradhan, T Maitra, S Sengupta… - Journal of …, 2019 - Elsevier
In this paper, we present a combined optical and structural study of GaAs-hosted InAs sub-
monolayer QD (SML-QD) vertical multi-stacks. The main feature of this paper is to …

Subsiding strain-induced In-Ga intermixing in InAs/InxGa1− xAs sub-monolayer quantum dots for room temperature photodetectors

SR Shriram, R Gourishetty, D Panda, D Das… - Infrared Physics & …, 2022 - Elsevier
Strain–induced intermixing in sub–monolayer (SML) quantum dots (QDs) affects primarily
the dot size distribution in an erratic way and also the inter–dot coupling efficiency for carrier …

Strain relaxation in stacked InAs/GaAs quantum dots studied by Raman scattering

J Ibanez, A Patane, M Henini, L Eaves… - Applied physics …, 2003 - pubs.aip.org
We report a Raman scattering investigation of InAs vibrational modes in multiple layers of
InAs self-assembled quantum dots in a GaAs matrix. The Raman peak associated with …

Interface phonons in InAs and AlAs quantum dot structures

AG Milekhin, AI Toropov, AK Bakarov, DA Tenne… - Physical Review B …, 2004 - APS
We present an experimental study of In As∕ Al As (Ga As) periodical structures with InAs
and AlAs quantum dots by means of Raman spectroscopy. Experiments on the asymmetric …

A detailed investigation of strain patterning effect on bilayer InAs/GaAs quantum dot with varying GaAs barrier thickness

B Tongbram, N Sehara, J Singhal… - Quantum Dots and …, 2016 - spiedigitallibrary.org
In this paper, we discuss detailed strain effects on a bilayer InAs quantum dot with varying
GaAs barrier thickness. The exploration of the range of GaAs barrier thickness effect on the …

Probing the intermixing in In (Ga) As∕ GaAs self-assembled quantum dots by Raman scattering

J Ibáñez, R Cuscó, S Hernández, L Artús… - Journal of Applied …, 2006 - pubs.aip.org
We show that Raman scattering is a sensitive technique for probing the degree of Ga
intermixing in In (Ga) As∕ Ga As self-assembled quantum dots (QDs). The shifts of the QD …

Graphene-capped InAs/GaAs quantum dots

H Ajlani, R Othmen, M Oueslati, A Cavanna… - Journal of Vacuum …, 2013 - pubs.aip.org
Graphene was grown by chemical vapor deposition and successfully transferred onto
InAs/GaAs quantum dots (QDs) grown by molecular beam epitaxy on a (001) GaAs …

Raman scattering in InAs∕(AlGa) As self-assembled quantum dots: Evidence of Al intermixing

J Ibanez, R Cuscó, L Artús, M Henini, A Patane… - Applied physics …, 2006 - pubs.aip.org
We use Raman scattering to study the composition of InAs self-assembled quantum dots
(QDs) embedded in an Al x Ga 1− x As matrix. When Al is introduced into the matrix (0.15< …

Raman scattering from InGaAs/GaAs quantum dot structures grown by atomic layer molecular beam epitaxy

WJ Choi, H Rho, JD Song, JI Lee, YH Cho - Physica E: Low-dimensional …, 2005 - Elsevier
We report Raman scattering studies of optical phonons in InGaAs/GaAs quantum dot (QD)
structures grown by atomic layer molecular beam epitaxy to explore formation of QDs and …