Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/18491

TitleStructural and optical properties of Ge nanocrystals embedded in Al2O3
Author(s)Caldelas, P.
Rolo, Anabela G.
Chahboun, A.
Foss, S.
Levichev, S.
Finstad, T. G.
Gomes, M. J. M.
Conde, O.
KeywordsGermanium
Ge
Alumina
Nanocrystals (NCs)
RF-magnetron sputtering
Raman
High resolution transmission electron microscopy (HRTEM)
Photoluminescence
Temperature
nanocrystals
Issue date2008
PublisherAmerican Scientific Publishers
JournalJournal of Nanoscience and Nanotechnology
Abstract(s)Ge nanocrystals (NCs) embedded in aluminum oxide were grown by RF-magnetron sputtering. Raman, high resolution transmission electron microscopy (HRTEM), selected area diffraction (SAD), and X-ray diffraction (XRD) techniques confirmed good cristallinity of the NCs from samples annealed at 800 °C. The average NC size was estimated to be around 7 nm. Photoluminescence (PL) measurements show an emission related to the NCs. The temperature dependence of the PL confirms the confinement phenomenon in the Ge NCs.
TypeArticle
DescriptionThe authors are grateful to Prof. R. Correia (Univ. de Aveiro) for help in performing the Raman experimental work. Accepted version (9 January 2007)
URIhttp://hdl.handle.net/1822/18491
DOI10.1166/jnn.2008.A186
ISSN1533-4880
1533-4899
Publisher versiontp://dx.doi.org/10.1166/jnn.2008.A186
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:CDF - FMNC - Artigos/Papers (with refereeing)

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