Pyramidal quantum dots: High uniformity and narrow excitonic emission

L. O. Mereni; V. Dimastrodonato; R. J. Young; E. Pelucchi

doi:10.1016/j.spmi.2009.07.033

Pyramidal quantum dots: High uniformity and narrow excitonic emission

L. O. Mereni
, V. Dimastrodonato
, R. J. Young
, E. Pelucchi

University College Cork

Research output: Contribution to journal › Article › peer-review

Abstract

We report on the optical properties of site-controlled InGaAs dots in GaAs barriers grown in pre-patterned, large pitch, pyramidal recesses by metalorganic vapour phase epitaxy. The inhomogeneous broadening of excitonic emission from an ensemble of quantum dots is found to be extremely narrow, with a standard deviation of 1.19 meV. A dramatic improvement in the spectral purity of emission lines from individual dots is also reported (18-30 μeV ) when compared to the state-of-the-art for site controlled quantum dots.

Original language	English
Pages (from-to)	78-82
Number of pages	5
Journal	Superlattices and Microstructures
Volume	47
Issue number	1
DOIs	https://doi.org/10.1016/j.spmi.2009.07.033
Publication status	Published - Jan 2010

Keywords

InGaAs dot
MOVPE
Site-controlled quantum dots
Small inhomogeneous broadening
Spectral purity

Access to Document

10.1016/j.spmi.2009.07.033

Cite this

@article{d574eb0c1b324ae39fb9894a83aefada,

title = "Pyramidal quantum dots: High uniformity and narrow excitonic emission",

abstract = "We report on the optical properties of site-controlled InGaAs dots in GaAs barriers grown in pre-patterned, large pitch, pyramidal recesses by metalorganic vapour phase epitaxy. The inhomogeneous broadening of excitonic emission from an ensemble of quantum dots is found to be extremely narrow, with a standard deviation of 1.19 meV. A dramatic improvement in the spectral purity of emission lines from individual dots is also reported (18-30 μeV ) when compared to the state-of-the-art for site controlled quantum dots.",

keywords = "InGaAs dot, MOVPE, Site-controlled quantum dots, Small inhomogeneous broadening, Spectral purity",

author = "Mereni, \{L. O.\} and V. Dimastrodonato and Young, \{R. J.\} and E. Pelucchi",

year = "2010",

month = jan,

doi = "10.1016/j.spmi.2009.07.033",

language = "English",

volume = "47",

pages = "78--82",

journal = "Superlattices and Microstructures",

issn = "0749-6036",

publisher = "Elsevier Ltd",

number = "1",

}

TY - JOUR

T1 - Pyramidal quantum dots

T2 - High uniformity and narrow excitonic emission

AU - Mereni, L. O.

AU - Dimastrodonato, V.

AU - Young, R. J.

AU - Pelucchi, E.

PY - 2010/1

Y1 - 2010/1

N2 - We report on the optical properties of site-controlled InGaAs dots in GaAs barriers grown in pre-patterned, large pitch, pyramidal recesses by metalorganic vapour phase epitaxy. The inhomogeneous broadening of excitonic emission from an ensemble of quantum dots is found to be extremely narrow, with a standard deviation of 1.19 meV. A dramatic improvement in the spectral purity of emission lines from individual dots is also reported (18-30 μeV ) when compared to the state-of-the-art for site controlled quantum dots.

AB - We report on the optical properties of site-controlled InGaAs dots in GaAs barriers grown in pre-patterned, large pitch, pyramidal recesses by metalorganic vapour phase epitaxy. The inhomogeneous broadening of excitonic emission from an ensemble of quantum dots is found to be extremely narrow, with a standard deviation of 1.19 meV. A dramatic improvement in the spectral purity of emission lines from individual dots is also reported (18-30 μeV ) when compared to the state-of-the-art for site controlled quantum dots.

KW - InGaAs dot

KW - MOVPE

KW - Site-controlled quantum dots

KW - Small inhomogeneous broadening

KW - Spectral purity

UR - https://www.scopus.com/pages/publications/72449148158

U2 - 10.1016/j.spmi.2009.07.033

DO - 10.1016/j.spmi.2009.07.033

M3 - Article

AN - SCOPUS:72449148158

SN - 0749-6036

VL - 47

SP - 78

EP - 82

JO - Superlattices and Microstructures

JF - Superlattices and Microstructures

IS - 1

ER -

Pyramidal quantum dots: High uniformity and narrow excitonic emission

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this