[HTML][HTML] Atomic-scale characterization of droplet epitaxy quantum dots

RSR Gajjela, PM Koenraad - Nanomaterials, 2021‏ - mdpi.com
The fundamental understanding of quantum dot (QD) growth mechanism is essential to
improve QD based optoelectronic devices. The size, shape, composition, and density of the …

Compositional map** of semiconductor quantum dots and rings

G Biasiol, S Heun - Physics Reports, 2011‏ - Elsevier
In this article we review the extensive experimental work on the compositional map** of
semiconductor quantum dots and rings. After a brief introduction of the various experimental …

Three-dimensional composition profiles of single quantum dots determined by scanning-probe-microscopy-based nanotomography

A Rastelli, M Stoffel, A Malachias, T Merdzhanova… - Nano …, 2008‏ - ACS Publications
Scanning probe microscopy combined with selective wet chemical etching is employed to
quantitatively determine the full three-dimensional (3D) composition profiles of single …

Structural and compositional analysis of (InGa)(AsSb)/GaAs/GaP Stranski–Krastanov quantum dots

RSR Gajjela, AL Hendriks, JO Douglas… - Light: Science & …, 2021‏ - nature.com
We investigated metal-organic vapor phase epitaxy grown (InGa)(AsSb)/GaAs/GaP Stranski–
Krastanov quantum dots (QDs) with potential applications in QD-Flash memories by cross …

Control of morphology and substrate etching in InAs/InP droplet epitaxy quantum dots for single and entangled photon emitters

RSR Gajjela, EM Sala, J Heffernan… - ACS Applied Nano …, 2022‏ - ACS Publications
We present a detailed atomic-resolution study of morphology and substrate etching
mechanism in InAs/InP droplet epitaxy quantum dots (QDs) grown by metal–organic vapor …

Suppression of InAs∕ GaAs quantum dot decomposition by the incorporation of a GaAsSb cap** layer

JM Ulloa, IWD Drouzas, PM Koenraad… - Applied physics …, 2007‏ - pubs.aip.org
The influence of a GaAsSb cap** layer on the structural properties of self-assembled
InAs∕ GaAs quantum dots (QDs) is studied on the atomic scale by cross-sectional scanning …

Excitonic structure and pum** power dependent emission blue-shift of type-II quantum dots

P Klenovský, P Steindl, D Geffroy - Scientific Reports, 2017‏ - nature.com
In this work we study theoretically and experimentally the multi-particle structure of the so-
called type-II quantum dots with spatially separated electrons and holes. Our calculations …

Electronic and optical properties of quantum dots on InP(100) and substrates: Theory and experiment

C Cornet, A Schliwa, J Even, F Doré, C Celebi… - Physical Review B …, 2006‏ - APS
We study the electronic and optical properties of In As∕ In P quantum dots (QDs) on (100)
and (311) B substrates. Atomic force microscopy (AFM) and cross-sectional scanning …

Exciton recombination dynamics in an ensemble of (In, Al) As/AlAs quantum dots with indirect band-gap and type-I band alignment

TS Shamirzaev, J Debus, DS Abramkin, D Dunker… - Physical Review B …, 2011‏ - APS
The dynamics of exciton recombination in an ensemble of indirect band-gap (In, Al) As/AlAs
quantum dots with type-I band alignment is studied. The lifetime of confined excitons that are …

Atomic and energy structure of InAs/AlAs quantum dots

TS Shamirzaev, AV Nenashev, AK Gutakovskii… - Physical Review B …, 2008‏ - APS
The atomic structure and energy spectrum of InAs quantum dots (QDs) in an AlAs matrix
have been experimentally studied by transmission electron microscopy (TEM) and steady …