%0 Journal Article
%T Effects of the Template Composition and Coating on the Photoluminescence Properties of ZnS:Mn Nanoparticles
%A Peng Lingling
%A Wang Yuhua
%J Nanoscale Research Letters
%D 2010
%I Springer
%X Mn-doped ZnS nanocrystals based on low dopant concentrations (0¨C2%) and coated with a shell of Zn(OH)2 have been prepared via soft template and precipitation reaction. The results indicate that the ZnS:Mn nanocrystal is cubic zinc blende structure and its diameter is 3.02 nm as demonstrated by XRD. Measured by TEM, the morphology of nanocrystals is a spherical shape, and their particle size (3¨C5 nm) is similar to that of XRD results. Photoluminescence spectra under ultraviolet region shows that the volume ratio of alcohol to water in the template has a great effect on the luminescence properties of ZnS:Mn particles. Compared with unpassivated ZnS:Mn nanocrystals, ZnS:Mn/Zn(OH)2 core/shell nanocrystal exhibits much improved luminescence and higher absolute quantum efficiency. Meanwhile, we simply explore the formation mechanism of ZnS:Mn nanocrystals in alcohol and water system and analyze the reason why alcohol and water cluster structures can affect the luminescent properties of nanoparticle.
%K ZnS
%K Nanoparticals
%K Coating
%K Template
%K Photoluminescence
%U http://dx.doi.org/10.1007/s11671-010-9572-7