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CdSe quantum dots using polyselenide precursor in soft chemical conditions
Garcia, Arlindo M. Fontes; Cachetas, J. H. R. S.; Oliveira, L. Filipa; Coutinho, Paulo J. G.CdSe quantum dots were prepared by a simple microemulsion templating technique at low temperature and using common inorganic precursors. Size control was obtained by small variations in reactant concentrations. The chalcogenide source was a polyselenide solution. Narrow (30-40nm fwhm) band gap photoluminescence low defect level and high quantum yield were obtained.
CdSe/TiO2 core-shell nanoparticles produced in AOT reverse micelles : applicati...
Coutinho, Paulo J. G.; Garcia, Arlindo M. Fontes; Fernandes, Marisa S. F.Documento submetido para revisão dos pares. A publicar em Nanoscale Research Letters. ISSN 1556-276X. ; CdSe quantum dots with a prominent band-edge photoluminescence were obtained by a soft w/o AOT microemulsion templating method with an estimated size of 2.7nm. The CdSe particles were covered with a TiO2 layer using a intermediate SiO2 coupling reagent by a sol-gel process. The resulting CdSe/TiO2 core/shell...
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