Geometric Features and Numerical Analysis of InAsSbP Composition Micro- and Nanostructures Shape Transformation at Nucleation from Liquid Phase

Results of the characterization and numerical analysis of InAsSbP composition strain-induced micro- and nanostructures shape transition are presented. Nucleation is performed from In-As-Sb-P quaternary composition liquid phase in Stranski–Krastanow growth mode. Geometric features and the shape trans...

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Bibliographic Details
Published inJournal of contemporary physics Vol. 56; no. 2; pp. 133 - 138
Main Authors Gambaryan, K. M., Aroutiounian, V. M.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.04.2021
Springer Nature B.V
Subjects
Composition
Indium arsenide antimonide phosphide
Islands
Lenses
Liquid phases
Microscopes
Nanostructure
Nucleation
Numerical analysis
Particle and Nuclear Physics
Physics
Physics and Astronomy
Quantum dots
Transformations
micro- and nanostructures
liquid phase
nanoarchitecture
InAsSbP
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Summary:Results of the characterization and numerical analysis of InAsSbP composition strain-induced micro- and nanostructures shape transition are presented. Nucleation is performed from In-As-Sb-P quaternary composition liquid phase in Stranski–Krastanow growth mode. Geometric features and the shape transformation chronology of truncated pyramidal islands, lens-shape and pyramidal quantum dots (QDs) are under consideration, which opens up new possibilities at nanoscale engineering and nanoarchitecture of several types of nanostructures. High-resolution scanning electron (HR-SEM) and transmission electron (TEM) microscopes are used for micro- and nanostructures characterization. We show that as the islands volume decreases, the following succession of shape transitions are detected: truncated pyramid, {111} facetted pyramid, {111} and partially {105} facetted pyramid, completely unfacetted ‘pre-pyramid’, which gradually evolve to hemisphere and then again to pyramidal QD but with higher facet indexes. Critical sizes of islands shape transformation from ‘pre-pyramid’ to hemisphere (500–550 nm) and then from lens-shape again to pyramidal QDs (5–7 nm) are experimentally detected and theoretically evaluated. It is shown that theoretically calculated values coincide with experimentally obtained data.
ISSN:1068-3372
1934-9378
DOI:10.3103/S1068337221020067