GaAs droplet quantum dots with nanometer-thin capping layer for plasmonic applications
GaAs droplet quantum dots with nanometer-thin capping layer for plasmonic applications
We report on the growth and optical characterisation of droplet GaAs quantum dots with extremely-thin (11 nm) capping layers. To achieve such result, an internal thermal heating step is introduced during the growth and its role in the morphological properties of the quantum dots obtained is investigated via scanning electron and atomic force microscopy. Photoluminescence measurements at cryogenic temperatures show optically stable, sharp and bright emission from single quantum dots, at near-infrared wavelengths. Given the quality of their optical properties and the proximity to the surface, such emitters are good candidates for the investigation of near field effects, like the coupling to plasmonic modes, in order to strongly control the directionality of the emission and/or the spontaneous emission rate, crucial parameters for quantum photonic applications.
In Park, Suk
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Trojak, Oliver Joe
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Lee, Eunhye
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Dong Song, Jin
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Kyhm, Jihoon
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Han, Ilki
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Kim, Jongsu
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Yi, Gyu-Chul
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Sapienza, Luca
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In Park, Suk
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Trojak, Oliver Joe
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Lee, Eunhye
bec7308a-c813-4a37-8e1e-bd713cd09087
Dong Song, Jin
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Kyhm, Jihoon
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Han, Ilki
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Kim, Jongsu
c26d8f2a-99a4-4687-a209-b38f8d12f889
Yi, Gyu-Chul
98024428-862b-491f-85ac-df7dcfe40c04
Sapienza, Luca
a2e0cf6c-1f22-4a5a-87a2-ffab0e24e6ac
In Park, Suk, Trojak, Oliver Joe, Lee, Eunhye, Dong Song, Jin, Kyhm, Jihoon, Han, Ilki, Kim, Jongsu, Yi, Gyu-Chul and Sapienza, Luca
(2018)
GaAs droplet quantum dots with nanometer-thin capping layer for plasmonic applications.
Nanotechnology, 29 (20).
(doi:10.1088/1361-6528/aab2e1).
Abstract
We report on the growth and optical characterisation of droplet GaAs quantum dots with extremely-thin (11 nm) capping layers. To achieve such result, an internal thermal heating step is introduced during the growth and its role in the morphological properties of the quantum dots obtained is investigated via scanning electron and atomic force microscopy. Photoluminescence measurements at cryogenic temperatures show optically stable, sharp and bright emission from single quantum dots, at near-infrared wavelengths. Given the quality of their optical properties and the proximity to the surface, such emitters are good candidates for the investigation of near field effects, like the coupling to plasmonic modes, in order to strongly control the directionality of the emission and/or the spontaneous emission rate, crucial parameters for quantum photonic applications.
Text
droplet_QDs_14Feb2018
- Accepted Manuscript
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Submitted date: 2017
Accepted/In Press date: 28 February 2018
e-pub ahead of print date: 23 March 2018
Additional Information:
Author Sapienza has confirmed that the manuscript included in this record is the AM. I have adjusted accordingly. Please check embargo details.
Identifiers
Local EPrints ID: 418210
URI: http://eprints.soton.ac.uk/id/eprint/418210
ISSN: 0957-4484
PURE UUID: f58da8a4-61e6-4b92-80fb-c611d77bc0c5
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Date deposited: 23 Feb 2018 17:30
Last modified: 16 Mar 2024 06:14
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Contributors
Author:
Suk In Park
Author:
Oliver Joe Trojak
Author:
Eunhye Lee
Author:
Jin Dong Song
Author:
Jihoon Kyhm
Author:
Ilki Han
Author:
Jongsu Kim
Author:
Gyu-Chul Yi
Author:
Luca Sapienza
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