The preparation of the Silica@ZnS@Silica and ZnS@Silica nano composite and its luminescence property

Title
The preparation of the Silica@ZnS@Silica and ZnS@Silica nano composite and its luminescence property
Authors
강민수한준수황영애유복렬
Issue Date
2011-05
Publisher
제26회 유기규소화학연구회 웍샵
Citation
, 39-39
Abstract
The luminescence of semiconductor nanoparticles such as InP and ZnSe etc., has been studied widely. Especially, ZnS nanoparticles have unique optical, electrical properties due to the quantum confinement effect. In this research, monodisperse spherical silica nanoparticles with size almost 300 nm were synthesized by Stiiber method. And then, ZnS nanoparticles were grown on the silica surface by the reaction between aqueous zrnc acetate dihydrate and aqueous thioacetamide. In other word, silica-ZnS nano composite with core-shell structures were prepared in this process. Finally, the thin layer of the silica was covered on the ZnS@silica using Sol-Gel process. In this research, the fluorescence of the silica layercovered ZnS@silica nano composite and uncovered ZnS@silica were measured by the photoluminescence instrument. As a result, the fluorescence intensrty of the silica layer-covered ZnS@silica nano composite was strongly increased compared with uncovered ZnS@silica. Here in, the luminescence properties and the surface images of silica@JnS@silica, ZnS@silica particles will be presented.
URI
http://pubs.kist.re.kr/handle/201004/40604
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KIST Publication > Conference Paper
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