The University of Southampton
University of Southampton Institutional Repository

Electroluminescence enhancement in mid-infrared InAsSb resonant cavity light emitting diodes for CO2 detection

Electroluminescence enhancement in mid-infrared InAsSb resonant cavity light emitting diodes for CO2 detection
Electroluminescence enhancement in mid-infrared InAsSb resonant cavity light emitting diodes for CO2 detection
In this work, we demonstrated a mid-infrared resonant cavity light emitting diode (RCLED) operating near 4.2 μm at room temperature, grown lattice-matched on a GaSb substrate by molecular beam epitaxy, suitable for CO2 gas detection. The device consists of a 1λ-thick microcavity containing an InAs0.90Sb0.1 active region sandwiched between two high contrast, lattice–matched AlAs0.08Sb0.92/GaSb distributed Bragg reflector (DBR) mirrors. The electroluminescence emission spectra of the RCLED were recorded over the temperature range from 20 to 300  K and compared with a reference LED without DBR mirrors. The RCLED exhibits a strong emission enhancement due to resonant cavity effects. At room temperature, the peak emission and the integrated peak emission were found to be increased by a factor of ∼70 and ∼11, respectively, while the total integrated emission enhancement was ∼×33. This is the highest resonant cavity enhancement ever reported for a mid-infrared LED operating at this wavelength. Furthermore, the RCLED also exhibits a superior temperature stability of ∼0.35  nm/K and a significantly narrower (10×) spectral linewidth. High spectral brightness and temperature stable emission entirely within the fundamental absorption band are attractive characteristics for the development of next generation CO2 gas sensor instrumentation.
InAsSb, Light emitting diodes, mid-infraed (mid-ir), resonant cavity, electroluminescent devices
0003-6951
171103
Al-Saymari, Furat
e2ba830b-7f31-4b0e-90fa-6a610ad399d7
Craig, Adam
8749c307-da0c-422d-a8b2-d5d3627243c8
Noori, Yasir
704d0b70-1ea6-4e00-92ce-cc2543087a09
Lu, Qi
2eab66a9-4e67-42aa-873b-fa872ecb71b7
Marshall, Andrew
bfe5c12c-d0e9-4405-bab5-30296b70de88
Krier, Anthony
0c888e26-9a0b-40ec-b4b9-51062e770e64
Al-Saymari, Furat
e2ba830b-7f31-4b0e-90fa-6a610ad399d7
Craig, Adam
8749c307-da0c-422d-a8b2-d5d3627243c8
Noori, Yasir
704d0b70-1ea6-4e00-92ce-cc2543087a09
Lu, Qi
2eab66a9-4e67-42aa-873b-fa872ecb71b7
Marshall, Andrew
bfe5c12c-d0e9-4405-bab5-30296b70de88
Krier, Anthony
0c888e26-9a0b-40ec-b4b9-51062e770e64

Al-Saymari, Furat, Craig, Adam, Noori, Yasir, Lu, Qi, Marshall, Andrew and Krier, Anthony (2019) Electroluminescence enhancement in mid-infrared InAsSb resonant cavity light emitting diodes for CO2 detection. Applied Physics Letters, 114 (17), 171103. (doi:10.1063/1.5090840).

Record type: Article

Abstract

In this work, we demonstrated a mid-infrared resonant cavity light emitting diode (RCLED) operating near 4.2 μm at room temperature, grown lattice-matched on a GaSb substrate by molecular beam epitaxy, suitable for CO2 gas detection. The device consists of a 1λ-thick microcavity containing an InAs0.90Sb0.1 active region sandwiched between two high contrast, lattice–matched AlAs0.08Sb0.92/GaSb distributed Bragg reflector (DBR) mirrors. The electroluminescence emission spectra of the RCLED were recorded over the temperature range from 20 to 300  K and compared with a reference LED without DBR mirrors. The RCLED exhibits a strong emission enhancement due to resonant cavity effects. At room temperature, the peak emission and the integrated peak emission were found to be increased by a factor of ∼70 and ∼11, respectively, while the total integrated emission enhancement was ∼×33. This is the highest resonant cavity enhancement ever reported for a mid-infrared LED operating at this wavelength. Furthermore, the RCLED also exhibits a superior temperature stability of ∼0.35  nm/K and a significantly narrower (10×) spectral linewidth. High spectral brightness and temperature stable emission entirely within the fundamental absorption band are attractive characteristics for the development of next generation CO2 gas sensor instrumentation.

Text
Electroluminescence enhancement in mid-infrared InAsSb resonant cavity light emitting diodes for CO 2 detection - Accepted Manuscript
Download (6MB)

More information

Accepted/In Press date: 6 April 2019
e-pub ahead of print date: 1 May 2019
Keywords: InAsSb, Light emitting diodes, mid-infraed (mid-ir), resonant cavity, electroluminescent devices

Identifiers

Local EPrints ID: 432577
URI: http://eprints.soton.ac.uk/id/eprint/432577
ISSN: 0003-6951
PURE UUID: 403252e0-c8b1-4f97-83b4-cc62115ca269
ORCID for Yasir Noori: ORCID iD orcid.org/0000-0001-5285-8779

Catalogue record

Date deposited: 18 Jul 2019 16:35
Last modified: 07 Oct 2020 02:21

Export record

Altmetrics

Contributors

Author: Furat Al-Saymari
Author: Adam Craig
Author: Yasir Noori ORCID iD
Author: Qi Lu
Author: Andrew Marshall
Author: Anthony Krier

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×