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Title: Long-wavelength shift and enhanced room temperature photoluminescence efficiency in GaAsSb/InGaAs/GaAs-based heterostructures emitting in the spectral range of 1.0–1.2 μm due to increased charge carrier's localization

In this work, a study of the photoluminescence (PL) temperature dependence in quantum well GaAs/GaAsSb and double quantum well InGaAs/GaAsSb/GaAs heterostructures grown by metalorganic chemical vapor deposition with different parameters of GaAsSb and InGaAs layers has been performed. It has been demonstrated that in double quantum well InGaAs/GaAsSb/GaAs heterostructures, a significant shift of the PL peak to a longer-wavelength region (up to 1.2 μm) and a considerable reduction in the PL thermal quenching in comparison with GaAs/GaAsSb structures can be obtained due to better localization of charge carriers in the double quantum well. For InGaAs/GaAsSb/GaAs heterostructures, an additional channel of radiative recombination with participation of the excited energy states in the quantum well, competing with the main ground-state radiative transition, has been revealed.
Authors:
; ; ; ;  [1] ;  [2] ; ;  [3]
  1. Institute for Physics of Microstructures RAS, Nizhny Novgorod 603950 (Russian Federation)
  2. (Russian Federation)
  3. Physical-Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, N. Novgorod 603950 (Russian Federation)
Publication Date:
OSTI Identifier:
22402686
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CHARGE CARRIERS; CHEMICAL VAPOR DEPOSITION; EFFICIENCY; GALLIUM ARSENIDES; GROUND STATES; INDIUM ARSENIDES; LAYERS; PEAKS; PHOTOLUMINESCENCE; QUANTUM WELLS; QUENCHING; RECOMBINATION; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; WAVELENGTHS