Structural and optical properties of Ge nanocrystals embedded in Al2O3

Utilize este identificador para referenciar este registo: https://hdl.handle.net/1822/18491

Título:	Structural and optical properties of Ge nanocrystals embedded in Al2O3
Autor(es):	Caldelas, P. Rolo, Anabela G. Chahboun, A. Foss, S. Levichev, S. Finstad, T. G. Gomes, M. J. M. Conde, O.
Palavras-chave:	Germanium Ge Alumina Nanocrystals (NCs) RF-magnetron sputtering Raman High resolution transmission electron microscopy (HRTEM) Photoluminescence Temperature nanocrystals
Data:	2008
Editora:	American Scientific Publishers
Revista:	Journal of Nanoscience and Nanotechnology
Resumo(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.
Tipo:	Artigo
Descrição:	The authors are grateful to Prof. R. Correia (Univ. de Aveiro) for help in performing the Raman experimental work. Accepted version (9 January 2007)
URI:	https://hdl.handle.net/1822/18491
DOI:	10.1166/jnn.2008.A186
ISSN:	1533-4880 1533-4899
Versão da editora:	tp://dx.doi.org/10.1166/jnn.2008.A186
Arbitragem científica:	yes
Acesso:	Acesso restrito UMinho
Aparece nas coleções:	CDF - FMNC - Artigos/Papers (with refereeing)