文献类型：期刊文献

英文题名：Synthesis and photoluminescence of water-soluble ZnS:Mn2+/ZnS quantum dots by nucleation doping strategy

作者：Yu, Zhangsen[1]; Ma, Xiying[2]

机构：[1] School of Medicine, Shaoxing University, Shaoxing 312000, China; [2] School of Mathematics and Physics, Suzhou University of Science and Technology, Jiangsu, 215011, China

年份：2011

卷号：6

期号：1

起止页码：75

外文期刊名：Nano

收录：EI(收录号：20111113757461)、Scopus(收录号：2-s2.0-79952578929)

语种：英文

外文关键词：Manganese compounds - II-VI semiconductors - Photoluminescence - Zinc sulfide - Doping (additives) - Optical properties - Emission spectroscopy - Fluorescence - Semiconductor quantum dots - Solutions - Nanocrystals - X ray diffraction

外文摘要：We report the synthesis of luminescent-doped core/shell quantum dots (QDs) of water-soluble manganese-doped zinc sulfide (ZnS:Mn2+/ZnS). QDs of ZnS:Mn2+/ZnS were prepared by nucleation doping strategy, with thioglycolic acid (TGA) as stabilizer in aqueous solution. Structure and optical properties of the ZnS:Mn2+/ZnS core/shell quantum dots were characterized by X-ray diffraction and photoluminescence emission spectroscopy. The influence of the synthesis conditions on the luminescent properties of ZnS:Mn2+/ZnS QDs is discussed. Different Mn2+ concentrations, ratios of the TGA/(Zn+Mn) and thickness of the ZnS shell were used. Results showed that the ZnS:Mn2+/ZnS QDs are water-soluble and have improved fluorescence properties. Therefore, Mn2+-doped ZnS quantum dots could be potential candidates as fluorescent labeling agents in biology. ? 2011 World Scientific Publishing Company.