Pyramidal quantum dots: High uniformity and narrow excitonic emission

Mereni, L. O. and Dimastrodonato, V. and Young, R. J. and Pelucchi, E. (2010) Pyramidal quantum dots: High uniformity and narrow excitonic emission. Superlattices and Microstructures, 47 (1). pp. 78-82. ISSN 0749-6036

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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 mu eV) when compared to the state-of-the-art for site controlled quantum dots. (C) 2009 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Journal or Publication Title: Superlattices and Microstructures
Uncontrolled Keywords: /dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 54909
Deposited By: ep_importer_pure
Deposited On: 07 Jun 2012 10:31
Refereed?: Yes
Published?: Published
Last Modified: 01 Jan 2020 07:54
URI: https://eprints.lancs.ac.uk/id/eprint/54909

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