文献类型：期刊文献

英文题名：Facile Synthesis of Highly Luminescent Mn-Doped ZnS Nanocrystals

作者：Zhang, Wenjin[1];Li, Yan[1];Zhang, Hua[1];Zhou, Xinggui[1];Zhong, Xinhua[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Dept Chem, Shanghai 200237, Peoples R China

年份：2011

卷号：50

期号：20

起止页码：10432

外文期刊名：INORGANIC CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000295602500076)】；

基金：The work is financially supported by the National Natural Science Foundation of China (Nos. 20771037 and 20871047), State Key Laboratory of Chemical Engineering (No. SKL-ChE-09C01), the Fundamental Research Funds for the Central Universities, and the Program for Professor of Special Appointment at Shanghai Institutions of Higher Learning for financial support.

语种：英文

摘要：Manganese-doped zinc sulfide quantum dots (Mn:ZnS d-dots) with high optical quality, pure dopant emission of 55-65% photoluminescence quantum yield, were synthesized in octadecene media with generic starting materials, namely, zinc (manganese) carboxylic acid salts, S powder, and dodecanethiol (DDT) based on a "nucleation doping" strategy. The optical properties and structure of the obtained Mn:ZnS d-dots have been characterized by UV-vis, photoluminescence (PL) spectroscopy, transmission electron microscopy (TEM), and X-ray diffraction (XRD). The resulting nearly monodisperse d-dots were found to be of spherical shape with a zinc-blende crystal structure. The influences of various experimental variables, induding the reaction temperature for the MnS core nanocluster and ZnS host material, the amount of octadecene (ODE)-S, DDT, as well as Zn/Mn ratio have been systematically investigated. The use of DDT as capping ligand ensured the reproducible access to a stable small-sized MnS core. This paves the way for reproducibly obtaining highly luminescent d-dots. Programmed overcoating temperature for growth of ZnS shell was employed to realize balanced diffusion of the Mn ions in the d-dots.