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Comparison of carrier localization effects between InAs quantum dashes and quantum dots in a DWELL (dashes- or dots-in-a-well) configuration

Journal Article · · Physica E. Low-dimensional Systems and Nanostructures
 [1];  [2];  [2];  [2];  [2];  [2];  [1];  [2]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Univ. of New Mexico, Albuquerque, NM (United States)

The optical properties of InAs quantum dashes (QDashes) grown on InP and InAs quantum dots (QDots) grown on GaAs in a dashes- or dots-in-a-well (DWELL) configuration are comparatively investigated using temperature-dependent photoluminescence (PL) measurements. The trends in PL characteristics such as exciton energy, spectral bandwidth and integrated intensity with respect to temperature are found to be distinctly dissimilar between the two systems. A rate-equation model involving exciton recombination and thermal transfer in a localized-state ensemble is used to quantitively interpret the experimental data. The results of this study suggest that QDashes in this configuration exhibit PL properties more consistent with a lower degree of carrier localization compared to QDots. A preliminary structural analysis highlighting the shape/size differences between the two nanostructures is also presented.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000; NA0003525
OSTI ID:
1650155
Alternate ID(s):
OSTI ID: 1694166
Report Number(s):
SAND--2020-8151J; 689790
Journal Information:
Physica E. Low-dimensional Systems and Nanostructures, Journal Name: Physica E. Low-dimensional Systems and Nanostructures Vol. 124; ISSN 1386-9477
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (28)

Thermal activation and thermal transfer of localized excitons in InAs self-organized quantum dots journal February 1998
Optical characteristics of InAs quantum dots on GaAs matrix by using various InGaAs structures journal June 2006
Epitaxial growth of 1.55μm emitting InAs quantum dashes on InP-based heterostructures by GS-MBE for long-wavelength laser applications journal April 2003
Atomic structure of InAs quantum dots on GaAs journal June 2003
Optical investigation of InGaAs-capped InAs quantum dots: Impact of the strain-driven phase separation and dependence upon post-growth thermal treatment journal December 2007
Carriers' localization and thermal redistribution in post growth voluntarily tuned quantum dashes' size/composition distribution journal January 2014
One-Dimensional Nature of InAs/InP Quantum Dashes Revealed by Scanning Tunneling Spectroscopy journal June 2015
Multi-watt 1.25 [micro sign]m quantum dot VECSEL journal January 2010
Extremely low room-temperature threshold current density diode lasers using InAs dots in In0.15Ga0.85As quantum well journal January 1999
InP based quantum dash lasers with 2 [micro sign]m wavelength journal January 2003
Exciton localization and temperature stability in self‐organized InAs quantum dots journal January 1996
Over 1.5 μm light emission from InAs quantum dots embedded in InGaAs strain-reducing layer grown by metalorganic chemical vapor deposition journal May 2001
High-detectivity, normal-incidence, mid-infrared (λ∼4 μm)InAs/GaAs quantum-dot detector operating at 150 K journal July 2001
2.0 μm wavelength InAs quantum dashes grown on a GaAs substrate using a metamorphic buffer layer journal March 2004
Thermal activation of excitons in asymmetric InAs dots-in-a-well InxGa1−xAs∕GaAs structures journal January 2007
Excitonic band edges and optical anisotropy of InAs∕InP quantum dot structures journal March 2008
Single-photon emission of InAs/InP quantum dashes at 1.55  μ m and temperatures up to 80 K journal April 2016
Temperature dependence of the photoluminescence emission from InAs quantum dots in a strained Ga 0.85 In 0.15 As quantum well journal October 2003
Electronic structure and optical properties of 1.55 µm emitting InAs/InGaAsP quantum dash tunnel injection structures journal August 2012
InAs quantum dots grown on metamorphic buffers as non-classical light sources at telecom C-band: a review journal April 2019
Excited states of neutral and charged excitons in single strongly asymmetric InP-based nanostructures emitting in the telecom C band journal December 2019
Optical and electronic properties of low-density InAs/InP quantum-dot-like structures designed for single-photon emitters at telecom wavelengths journal May 2020
Two-dimensional excitonic emission in InAs submonolayers journal December 1996
Effect of carrier emission and retrapping on luminescence time decays in InAs/GaAs quantum dots journal November 1997
From quantum dots to quantum dashes: Excitonic spectra of highly elongated InAs/InP nanostructures journal May 2019
Lasing characteristics of self-formed quantum-dot lasers with multistacked dot layer journal April 1997
Low-threshold current density 1.3-μm InAs quantum-dot lasers with the dots-in-a-well (DWELL) structure journal June 2000
A model for steady-state luminescence of localized-state ensemble journal September 2005

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