Comparative Chemico-Physical Analyses of Strain-Free GaAs/Al(0.3)Ga(0.7)As Quantum Dots Grown by Droplet Epitaxy

We investigate the quantum confinement effects on excitons in several types of strain-free GaAs/Al [Formula: see text] Ga [Formula: see text] As droplet epitaxy (DE) quantum dots (QDs). By performing comparative analyses of energy-dispersive X-ray spectroscopy with the aid of a three-dimensional (3D...

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Detalles Bibliográficos
Autores principales: Yeo, Inah, Kim, Doukyun, Lee, Kyu-Tae, Kim, Jong Su, Song, Jin Dong, Park, Chul-Hong, Han, Il Ki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7407363/
https://www.ncbi.nlm.nih.gov/pubmed/32630839
http://dx.doi.org/10.3390/nano10071301
Descripción
Sumario:We investigate the quantum confinement effects on excitons in several types of strain-free GaAs/Al [Formula: see text] Ga [Formula: see text] As 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).

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