Enhanced performance of in (Ga) as QD based optoelectronic devices through improved interface quality between QD and matrix material

D Panda, A Chatterjee, J Saha, D Das… - … status solidi (b), 2019 - Wiley Online Library
The interface quality in InAs/GaAs and In0. 5Ga0. 5As/GaAs quantum dot (QD)
heterostructures are elucidated through the phonon‐assisted vibrational modes and is found …

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 …

Vertical strain-induced dot size uniformity and thermal stability of InAs/GaAsN/GaAs coupled quantum dots

M Biswas, S Singh, A Balgarkashi, R Makkar… - Journal of Alloys and …, 2018 - Elsevier
We report, for the first time, 10-layer InAs/GaAsN/GaAs quantum dots (QDs) by varying the
GaAs layer thickness and investigate their optical properties. Due to propagation of strain …

Impurity free vacancy disordering of InAs/GaAs quantum dot and InAs/InGaAs dot-in-a-well structures

CK Chia, SJ Chua, YJ Wang, AM Yong, SY Chow - Thin solid films, 2007 - Elsevier
Two types of InAs quantum dot (QD) structure, grown by molecular-beam epitaxy on GaAs
(100) substrates, one with dot-in-a-In0. 12Ga0. 88As quantum well (QW) and another one …

Temperature-dependent modulated reflectance and photoluminescence of InAs–GaAs and InAs–InGaAs–GaAs quantum dot heterostructures

A Rimkus, E Pozingytė, R Nedzinskas… - Optical and Quantum …, 2016 - Springer
Optical transitions and electronic properties of epitaxial InAs quantum dots (QDs) grown with
and without InGaAs strain-relieving capping layer within GaAs/AlAs quantum well (QW) are …

Carrier dynamics of strain-engineered InAs quantum dots with (In) GaAs surrounding material

O Nasr, N Chauvin, MHH Alouane, H Maaref… - Journal of …, 2017 - iopscience.iop.org
The present study reports on the optical properties of epitaxially grown InAs quantum dots
(QDs) inserted within an InGaAs strain-reducing layer (SRL). The critical energy states in …

Comprehensive investigation of optical and electronic properties of tunable InAs QDs optically active at O-band telecommunication window with (In) GaAs surrounding …

O Nasr, MHH Alouane, H Maaref, F Hassen… - Journal of …, 2014 - Elsevier
In this paper, we report on the impact of InAs quantum dots'(QDs) position within InGaAs
strain reducing layer on their structural and optical properties. Morphological investigation …

Influence of InGaAs matrix thickness on the optical properties and strain distribution in self-assembled sub-monolayer InAs quantum dot heterostructures

SR Shriram, R Kumar, SA Gazi, J Saha… - Nanophotonics …, 2020 - spiedigitallibrary.org
In this study, we have discussed the effect of strain distribution and optical properties on In
0.14 Ga 0.86 As matrix thickness variation (t mat) in self-assembled InAs quantum dot (QD) …

Evaluation of In (Ga) As capping in a multilayer coupled InAs quantum dot system: Growth strategy involving the same overgrowth percentage

R Gourishetty, D Panda, S Dongre, SA Gazi… - Journal of …, 2021 - Elsevier
Abstract Strain-coupled multilayer Quantum Dot (QD) structures draw a great attention these
days because of their superior optical and device performance. However, these coupled …

Investigation of strain in self-assembled multilayer InAs/GaAs quantum dot heterostructures

S Adhikary, N Halder, S Chakrabarti, S Majumdar… - Journal of crystal …, 2010 - Elsevier
The self-assembled InAs/GaAs multilayer quantum dots (QDs) are formed in a strain-driven
process due to the lattice mismatch of the InAs/GaAs system. We have investigated strain …