Comparative chemico-physical analyses of strain-free GaAs/Al0.3Ga0.7As quantum dots grown by droplet epitaxy

Title
Comparative chemico-physical analyses of strain-free GaAs/Al0.3Ga0.7As quantum dots grown by droplet epitaxy
Authors
한일기송진동이규태여인아김도균김종수박철홍
Keywords
droplet epitaxy; strain-free quantum dot; TEM-EDS
Issue Date
2020-07
Publisher
Nanomaterials
Citation
VOL 10, 1301
Abstract
We investigate the quantum confinement effects on excitons in several types of strain-free GaAs/Al0.3Ga0.7As droplet epitaxy (DE) quantum dots (QDs). By performing comparative analyses of energy-dispersive X-ray spectroscopy with the aid of a three-dimensional (3D) envelope-function model, we elucidate the individual quantum confinement characteristics of the QD band structures with respect to their composition profiles and the asymmetries of their geometrical shapes. By precisely controlling the exciton oscillator strength in strain-free QDs, we envisage the possibility of tailoring light-matter interactions to implement fully integrated quantum photonics based on QD single-photon sources (SPSs).
URI
http://pubs.kist.re.kr/handle/201004/71967
ISSN
2079-4991
Appears in Collections:
KIST Publication > Article
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