Temperature dependence of photoluminescence from CdSe nanocrystals embedded in silica matrix

doi:10.1016/j.jlumin.2009.06.007

Utilize este identificador para referenciar este registo: https://hdl.handle.net/1822/17184

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Campo DC	Valor	Idioma
dc.contributor.author	Chahboun, A.	-
dc.contributor.author	Levichev, S.	-
dc.contributor.author	Rolo, Anabela G.	-
dc.contributor.author	Conde, O.	-
dc.contributor.author	Gomes, M. J. M.	-
dc.date.accessioned	2012-02-16T16:08:17Z	-
dc.date.available	2012-02-16T16:08:17Z	-
dc.date.issued	2009-07-21	-
dc.date.submitted	2008-10-03	-
dc.identifier.issn	0022-2313	por
dc.identifier.uri	https://hdl.handle.net/1822/17184	-
dc.description.abstract	In this work, CdSe nanocrystals (NCs) embedded in SiO(2) matrix were grown by radio frequency (RF)sputtering technique. X-ray technique was used to characterise the structural properties of the system. The NC's size was estimated to be around 4 +/- 1 nm in diameter. The temperature dependence of the photoluminescence from the CdSe/SiO(2) System showed carriers thermal exchange between the NCs and deep defects in the matrix. The evolution of the excitonic energy emission with temperature is about 10 meV in the temperature range 15-295 K. This weak shift was explained by thermal mismatch between the matrix and the NCs.	por
dc.description.sponsorship	Fundacao para a Ciencia e a Tecnologia (FCT) ‘‘Programa Operacional Ciencia e Inovacao 2010-POCI2010’’, SFRH/BPD/26532/2006.	por
dc.description.sponsorship	Fundo Comunitario Europeu (FEDER) - Projecto PTDC/ FIS/70194/200	por
dc.language.iso	eng	por
dc.publisher	Elsevier 1	por
dc.rights	restrictedAccess	por
dc.subject	CdSe	por
dc.subject	Nanocrystals	por
dc.subject	Photoluminescence	por
dc.subject	Temperature dependence	por
dc.subject	Thermal expansion	por
dc.title	Temperature dependence of photoluminescence from CdSe nanocrystals embedded in silica matrix	por
dc.type	article	por
dc.peerreviewed	yes	por
dc.relation.publisherversion	http://www.sciencedirect.com/	por
sdum.publicationstatus	published	por
oaire.citationStartPage	1235	por
oaire.citationEndPage	1238	por
oaire.citationIssue	10	por
oaire.citationTitle	Journal of Luminescence	por
oaire.citationVolume	129	por
dc.identifier.doi	10.1016/j.jlumin.2009.06.007	por
dc.subject.wos	Science & Technology	por
sdum.journal	Journal of Luminescence	por
Aparece nas coleções:	CDF - FMNC - Artigos/Papers (with refereeing)