Optical Properties of a Quantum Dot-Ring System Grown Using Droplet Epitaxy

Gabriel Linares-García; Lilia Meza-Montes; Eric Stinaff; S. M. Alsolamy; M. E. Ware; Y. I. Mazur; Z. M. Wang; Jihoon Lee; G. J. Salamo

doi:10.1186/s11671-016-1518-2

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Optical Properties of a Quantum Dot-Ring System Grown Using Droplet Epitaxy

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Optical Properties of a Quantum Dot-Ring System Grown Using Droplet Epitaxy

Gabriel Linares-García, Lilia Meza-Montes, Eric Stinaff, S. M. Alsolamy, M. E. Ware, Y. I. Mazur, Z. M. Wang, Jihoon Lee and G. J. Salamo

Nanoscale research letters, Vol.11(1), pp.309-8

01/12/2016

DOI: https://doi.org/10.1186/s11671-016-1518-2

PMCID: PMC4920786

PMID: 27342603

Abstract

Finite element

Lifetime of excitons

Nano Express

Photoluminescence

Quantum dots

Quantum rings

Electronic and optical properties of InAs/GaAs nanostructures grown by the droplet epitaxy method are studied. Carrier states were determined by k · p theory including effects of strain and In gradient concentration for a model geometry. Wavefunctions are highly localized in the dots. Coulomb and exchange interactions are studied and we found the system is in the strong confinement regime. Microphotoluminescence spectra and lifetimes were calculated and compared with measurements performed on a set of quantum rings in a single sample. Some features of spectra are in good agreement.

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Title: Optical Properties of a Quantum Dot-Ring System Grown Using Droplet Epitaxy
Creators - without role: Gabriel Linares-García - Benemérita Universidad Autónoma de Puebla
Lilia Meza-Montes - Benemérita Universidad Autónoma de Puebla
Eric Stinaff - Ohio University Lancaster
S. M. Alsolamy - Ohio University Lancaster
M. E. Ware - University of Arkansas at Fayetteville
Y. I. Mazur - University of Arkansas at Fayetteville
Z. M. Wang - University of Arkansas at Fayetteville
Jihoon Lee - Kwangwoon University
G. J. Salamo - University of Arkansas at Fayetteville
Publication Details: Nanoscale research letters, Vol.11(1), pp.309-8
Publisher: Springer US
Grant note: ; OIA-1457888 / ; DMR-1309989 / ; CB-2009-133516 / ;
Identifiers: 9920672708331
Academic Unit: King Abdulaziz University; King Saud Bin Abdulaziz University for Health Sciences
Language: English
Resource Type: Journal article