Comparative study of nano-ZnS:Mn embedded in shell and films Michael Bredol, Ping Yang, Adam Szatkowski, Katarzyna Matras

Nanosized ZnS:Mn is well-established UV-excited phosphor material, actually the first nanophosphor ever described. However, potential applications require the encapsulation in inert matrices in order to protect the material and to prevent the formation of quenching surface defects. In order to achieve materials with a height filling factor of the nanomaterial, layers and films should be formed preferentially by self-assembly, because then full control of the developing nanostructure ac still be achieved.

Comparative study of nano-ZnS:Mn embedded in shell and films Michael Bredol, Ping Yang, Adam Szatkowski, Katarzyna Matras

Nanosized ZnS:Mn is well-established UV-excited phosphor material, actually the first nanophosphor ever described. However, potential applications require the encapsulation in inert matrices in order to protect the material and to prevent the formation of quenching surface defects. In order to achieve materials with a height filling factor of the nanomaterial, layers and films should be formed preferentially by self-assembly, because then full control of the developing nanostructure ac still be achieved.

 In this work, various approaches to encapsulate ZnS:Mn in functionalized shells or films of ZnS, silica and polymers are investigated and characterized. Goal is on one hand the control of (high) luminous efficiency and on the other hand the preparation of functionalized nanophosphors ready for self assembly. To this end, acidic as well as basic surfaces are established on the nanoparticles by the adsorption of small molecular units, preparing then thus for layer-by-layer selfassenbly into films.

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Poster był prezentowany na EMRS-Strasbourg http://www.emrs-strasbourg.com/

Za materiały redakcja Nanonet.pl serdecznie dziękuje Panu Adamowi Szatkowskiemu

umieścił Jacek Doskocz