Journal ArticleDOI
Self-organization in growth of quantum dot superlattices.
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TLDR
The growth of multilayer arrays of coherently strained islands self-organizes into a more regular three-dimensional arrangement, providing a possible route to obtain the size uniformity needed for electronic applications of quantum dot arrays.Abstract:
We investigate the growth of multilayer arrays of coherently strained islands, which may serve as ``quantum dots'' in electronic devices. A simple model reproduces the observed vertical correlation between islands in successive layers. However, the arrangement of islands is not simply repeated from layer to layer. Instead, the island size and spacing grow progressively more uniform. In effect, the structure ``self-organizes'' into a more regular three-dimensional arrangement, providing a possible route to obtain the size uniformity needed for electronic applications of quantum dot arrays.read more
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Correlation of Microphotoluminescence Spectroscopy, Scanning Transmission Electron Microscopy, and Atom Probe Tomography on a Single Nano-object Containing an InGaN/GaN Multiquantum Well System
Lorenzo Rigutti,Ivan Blum,Deodatta Shinde,D. Hernández-Maldonado,Williams Lefebvre,Jonathan Houard,François Vurpillot,Angela Vella,Maria Tchernycheva,Christophe Durand,Joël Eymery,Bernard Deconihout +11 more
TL;DR: A single nanoscale object containing a set of InGaN/GaN nonpolar multiple-quantum wells has been analyzed by microphotoluminescence spectroscopy, high-resolution scanning transmission electron microscopy and atom probe tomography, supporting the interpretation that the observed μPL narrow emission lines are related to exciton states localized in potential minima induced by the irregular 3D In distribution within the quantum well (QW).
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Fabrication of ZnSe quantum dots under Volmer-Weber mode by metalorganic chemical vapor deposition
TL;DR: In this paper, the possibility of fabricating quantum dots under Volmer-Weber growth mode is investigated, and the effect of ZnSe growth duration was investigated, which indicated that carrier confinement plays a dominant role.
Journal ArticleDOI
Experimental and theoretical study of strain-induced AlGaAs/GaAs quantum dots using a self-organized GaSb island as a stressor
Tao Wang,Alfred Forchel +1 more
TL;DR: In this paper, the lattice mismatch plays a crucial role in fabricating strain-induced AlGaAs/GaAs quantum dots (QD) using self-organized GaSb islands on a GaAs surface as stressors.
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Self-assembled structures of closely stacked InAs islands grown on GaAs by molecular beam epitaxy
TL;DR: Closely stacked Stranski-Krastanow (SK) growth islands were investigated in this article, showing that upper islands grew closely just on the lower islands aligning vertically on the first layer islands.
Journal ArticleDOI
Nanoparticles under the influence of surface/interface elasticity
Changwen Mi,Demitris Kouris +1 more
TL;DR: In this paper, the effect of surface/interface elasticity in the presence of nanoparticles, embedded in a semi-infinite elastic medium, was investigated by the technological significance of self-organization of strained islands in multilayered systems.