White-light photoluminescence and photoactivation in cadmium sulfide embedded in mesoporous silicon dioxide templates studied by confocal laser scanning microscopy
Pellicer Vilà, Eva M. (Eva Maria) (Universitat Autònoma de Barcelona. Departament de Física)
Suriñach, Santiago (Suriñach Cornet) (Universitat Autònoma de Barcelona. Departament de Física)

Data: 2013
Resum: SBA-15 and SBA-16 silica templates have been infiltrated with CdS by means of nanocasting using a hybrid precursor. The morphology and structure of both the SiO2@CdS nanocomposites and the silica-free CdS replicas have been characterized. The three-dimensional nanocrystalline CdS networks embedded in SBA-15 and SBA-16 silica templates exhibit broad photoluminescence (PL) spectra over the entire visible range, together with enhanced PL intensity compared to silica-free CdS replicas. These effects result from the role silica plays in passivating the surface of the CdS mesostructures. Furthermore, photoactivation is eventually observed during continuous illumination because of both structural and chemical surface odifications. Owing to this combination of properties, these materials could be appealing for solid-state lighting, where ultra-bright near-white PL emission is indispensable.
Nota: This is the author’s version of a work that was accepted for publication in Journal of colloid and interface science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of colloid and interface science, [147, 1, (2013)] DOI10.1016/j.jcis.2013.06.022)
Nota: Número d'acord de subvenció MINECO/MAT2011-27380-C02-01
Nota: Número d'acord de subvenció AGAUR/2009/SGR-1292
Drets: Tots els drets reservats
Llengua: Anglès
Document: article ; recerca ; acceptedVersion
Matèria: Microscòpia confocal ; Fotoluminescència ; Sulfur de cadmi
Publicat a: Journal of colloid and interface science, Vol. 407, Núm. 1 (octubre 2013) , p. 47-59, ISSN 1095-7103

DOI: 10.1016/j.jcis.2013.06.022

15 p, 10.1 MB

El registre apareix a les col·leccions:
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Grup de nanoenginyeria de materials, nanomagnetisme i nanomecànica (Gnm3)
Articles > Articles de recerca
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 Registre creat el 2013-11-06, darrera modificació el 2017-10-15

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