The influence of growth interruption on the luminescence properties of Ga(As,Sb)-based type II heterostructures

The influence of growth interruption on the luminescence properties of the Ga(As,Sb)/GaAs interface have been studied by continous wave and time resolved photoluminescence spectrosocopy in type II Ga(As,Sb)/GaAs/(Ga,In)As double quantum well structures. A specific highly selective etching technique...

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Bibliographic Details
Published inarXiv.org
Main Authors Rost, Luise, Lehr, Jannik, Maradiya, Milan, Hellweg, Lukas, Fillsack, Florian, Stolz, Wolfgang, Heimbrodt, Wolfram
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 27.11.2020
Subjects
Atomic force microscopy
Charge transfer
Heterostructures
Luminescence
Morphology
Optical properties
Photoluminescence
Physics - Materials Science
Quantum efficiency
Quantum wells
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Summary:The influence of growth interruption on the luminescence properties of the Ga(As,Sb)/GaAs interface have been studied by continous wave and time resolved photoluminescence spectrosocopy in type II Ga(As,Sb)/GaAs/(Ga,In)As double quantum well structures. A specific highly selective etching technique in combination with atomic force microscopy (AFM) is used to analyse the morphology of the Ga(As,Sb) interface layers. The type II charge transfer recombination has been used as sensitive probe. It was found, that highest luminescence quantum efficiency can be achieved using a 10s growth interruption applying a stabilization using both precursor sources for the anion sublattice.
ISSN:2331-8422
DOI:10.48550/arxiv.2011.13631