The Role of Groove Periodicity in the Formation of Site-Controlled Quantum Dot Chains

Structural and optical properties of InAs quantum dot (QD) chains formed in etched GaAs grooves having different periods from 200 to 2000 nm in [010] orientation are reported. The site-controlled QDs were fabricated by molecular beam epitaxy on soft UV-nanoimprint lithography-patterned GaAs(001) sur...

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Detalles Bibliográficos
Autores principales: Schramm, Andreas, Hakkarainen, Teemu V, Tommila, Juha, Guina, Mircea
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2015
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4467802/
https://www.ncbi.nlm.nih.gov/pubmed/26058509
http://dx.doi.org/10.1186/s11671-015-0938-8
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author Schramm, Andreas
Hakkarainen, Teemu V
Tommila, Juha
Guina, Mircea
author_facet Schramm, Andreas
Hakkarainen, Teemu V
Tommila, Juha
Guina, Mircea
author_sort Schramm, Andreas
collection PubMed
description Structural and optical properties of InAs quantum dot (QD) chains formed in etched GaAs grooves having different periods from 200 to 2000 nm in [010] orientation are reported. The site-controlled QDs were fabricated by molecular beam epitaxy on soft UV-nanoimprint lithography-patterned GaAs(001) surfaces. Increasing the groove periods decreases the overall QD density but increases the QD size and the linear density along the groove direction. The effect of the increased QD size with larger periods is reflected in ensemble photoluminescence measurements as redshift of the QD emission. Furthermore, we demonstrate the photoluminescence emission from single QD chains.
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spelling pubmed-44678022015-06-18 The Role of Groove Periodicity in the Formation of Site-Controlled Quantum Dot Chains Schramm, Andreas Hakkarainen, Teemu V Tommila, Juha Guina, Mircea Nanoscale Res Lett Nano Express Structural and optical properties of InAs quantum dot (QD) chains formed in etched GaAs grooves having different periods from 200 to 2000 nm in [010] orientation are reported. The site-controlled QDs were fabricated by molecular beam epitaxy on soft UV-nanoimprint lithography-patterned GaAs(001) surfaces. Increasing the groove periods decreases the overall QD density but increases the QD size and the linear density along the groove direction. The effect of the increased QD size with larger periods is reflected in ensemble photoluminescence measurements as redshift of the QD emission. Furthermore, we demonstrate the photoluminescence emission from single QD chains. Springer US 2015-05-28 /pmc/articles/PMC4467802/ /pubmed/26058509 http://dx.doi.org/10.1186/s11671-015-0938-8 Text en © Schramm et al.; licensee Springer. 2015 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.
spellingShingle Nano Express
Schramm, Andreas
Hakkarainen, Teemu V
Tommila, Juha
Guina, Mircea
The Role of Groove Periodicity in the Formation of Site-Controlled Quantum Dot Chains
title The Role of Groove Periodicity in the Formation of Site-Controlled Quantum Dot Chains
title_full The Role of Groove Periodicity in the Formation of Site-Controlled Quantum Dot Chains
title_fullStr The Role of Groove Periodicity in the Formation of Site-Controlled Quantum Dot Chains
title_full_unstemmed The Role of Groove Periodicity in the Formation of Site-Controlled Quantum Dot Chains
title_short The Role of Groove Periodicity in the Formation of Site-Controlled Quantum Dot Chains
title_sort role of groove periodicity in the formation of site-controlled quantum dot chains
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4467802/
https://www.ncbi.nlm.nih.gov/pubmed/26058509
http://dx.doi.org/10.1186/s11671-015-0938-8
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