Influence of a low-temperature capping on the crystalline structure and morphology of InGaN quantum dot structures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10173504" target="_blank" >RIV/00216208:11320/14:10173504 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.jallcom.2013.09.005" target="_blank" >http://dx.doi.org/10.1016/j.jallcom.2013.09.005</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2013.09.005" target="_blank" >10.1016/j.jallcom.2013.09.005</a>

Result language

angličtina

Original language name

Influence of a low-temperature capping on the crystalline structure and morphology of InGaN quantum dot structures

Original language description

The structure and morphology of uncapped and capped InGaN quantum dots formed by spinodal decomposition was studied by AFM, SEM, XRD, and EXAFS. As result of the spinodal decomposition, the uncapped samples show a meander structure with low Indium content which is strained to the GaN template, and large, relaxed Indium-rich islands. The thin meander structure is responsible for the quantum dot emission. A subsequently deposited low-temperature GaN cap layer forms small and nearly unstrained islands on top of the meander structure which is a sharp interface between the GaN template and the cap layer. For an InGaN cap layer deposited with similar growth parameters, a similar morphology but lower crystalline quality was observed. After deposition of a second GaN cap at a slightly higher temperature, the surface of the quantum dot structure is smooth. The large In-rich islands observed for the uncapped samples are relaxed, have a relatively low crystalline quality and a broad size distribu

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

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

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

Name of the periodical

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

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Volume of the periodical

585

Issue of the periodical within the volume

leden

Country of publishing house

CH - SWITZERLAND

Number of pages

8

Pages from-to

572-579

UT code for WoS article

000327492600085

EID of the result in the Scopus database

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