Lateral shape of InAs/GaAs quantum dots in vertically correlated structures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F07%3A00028834" target="_blank" >RIV/00216224:14310/07:00028834 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Lateral shape of InAs/GaAs quantum dots in vertically correlated structures

Original language description

InAs/GaAs quantum dots (QDs) in vertically correlated structures were studied by photoluminescence (PL) and atomic force microscopy (AFM). Samples were grown by low-pressure metalorganic vapor phase epitaxy (LP MOVPE). InAs QDs on the GaAs surface as well as GaAs hillocks covering the underlying QDs are elongated in the [-110] direction. This elongation is caused by higher lateral growth rates of both materials in the [-110] direction on the [100]-oriented substrates. The elongation and curvature of GaAs hillocks is probably the cause of the change of elongation direction of QDs in the upper layers of vertically stacked structures. With greater number of layers, QDs start to be circular. This is potentially a useful tool for controlling QD properties in laser structures.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2007

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of crystal growth

ISSN

0022-0248

e-ISSN

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Volume of the periodical

298

Issue of the periodical within the volume

SI

Country of publishing house

JP - JAPAN

Number of pages

4

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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