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Theoretical analysis of 1.55 mu m emitting GaInNAs QD's on different substrates

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Tomic, Stanko and Jones, T. S. (Tim S.) (2008) Theoretical analysis of 1.55 mu m emitting GaInNAs QD's on different substrates. In: 13th International Conference on Modulated Semiconductor Structures (MSS13)/17th International Conference on Electronic Properties of 2-Dimensional Systems, Genova, Italy, Jul 15-20, 2007. Published in: Physica E: Low-Dimensional Systems and Nanostructures, Volume 40 (Number 6). pp. 1955-1957. ISSN 1386-9477. doi:10.1016/j.physe.2007.09.049

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Official URL: http://dx.doi.org/10.1016/j.physe.2007.09.049

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Abstract

We present a theoretical study which compares the electronic and optical properties of dilute nitrogen GaInNAs quantum dots (QD) on two different substrates, GaAs and InP. The calculations are based on a 10 band k.p band-anti-crossing (BAC) Hamiltonian, incorporating valence, conduction and nitrogen-induced bands. We show that 1.55 mu m emission can be achieved on both substrates through appropriate tailoring of the QD size. On GaAs, the dominant dipole matrix element is the (e) over cap (x) and (e) over cap (y) light polarization, whereas on InP substrate, the dominant component is the (e) over cap (z) light polarization. Our results also identifiy the different In and N QD compositions required for long-wavelength emission on both substrates. (C) 2007 Elsevier B.V. All rights reserved.

Item Type: Conference Item (UNSPECIFIED)
Subjects: T Technology
Q Science > QC Physics
Divisions: Faculty of Science > Chemistry
Library of Congress Subject Headings (LCSH): Quantum dots, Semiconductors -- Optical properties
Journal or Publication Title: Physica E: Low-Dimensional Systems and Nanostructures
Publisher: Elsevier BV
ISSN: 1386-9477
Official Date: April 2008
Dates:
DateEvent
April 2008Published
Volume: Volume 40
Number: Number 6
Number of Pages: 3
Page Range: pp. 1955-1957
DOI: 10.1016/j.physe.2007.09.049
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Title of Event: 13th International Conference on Modulated Semiconductor Structures (MSS13)/17th International Conference on Electronic Properties of 2-Dimensional Systems
Type of Event: Conference
Location of Event: Genova, Italy
Date(s) of Event: Jul 15-20, 2007

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