Preparation and Photoluminescence of ZnS:Mn2+/polystyrene Core-Shell Structures and ZnS:Mn2+ Hollow Spheres
- Received Date: 2004-08-07
- ZnS: Mn2 + , Core-shell, Hollow sphere /
Abstract: ZnS:Mn2+ polystyrene (PS) core-shell structures and ZnS:Mn2+ hollow spheres were prepared by a sonoehemical deposition approach. Transmission electron micrograph (TEM) studies show that the PS surface is covered by a thin shell consisted of ZnS: Mn2+ nanoparticles with an average size of 9 nm. ZnS: Mn2+ hollow spheres were obtained by heating the core-shell particles in air at 500 ℃ to drive off PS. The photoluminescence spectrum for the emission band of Mn2+ peaked at 540 nm, and a 45 nm blue shift compared to that of corresponding bulk sample, was discussed based on the Mn-O octahedral distortion induced by shell structure.
|Citation:||Zhang Lixin, Zhang Ren, Wang Lin, Zhou Chunming, Jin Pu, Chen Qianwang. Preparation and Photoluminescence of ZnS:Mn2+/polystyrene Core-Shell Structures and ZnS:Mn2+ Hollow Spheres[J]. Chinese Journal of Chemical Physics , 2005, 18(4): 609-613. doi: 10.1088/1674-0068/18/4/609-613|