Synthesis and spectroscopic investigations of Cu- and Pb-doped colloidal ZnS nanocrystals

被引:43
作者
Ehlert, Oliver
Osvet, Andres
Batentschuk, Miroslaw
Winnacker, Albrecht
Nann, Thomas
机构
[1] Univ Erlangen Nurnberg, Inst Mat Sci 6, D-8520 Erlangen, Germany
[2] Univ Freiburg, Ctr Mat Res, D-79104 Freiburg, Germany
[3] Univ E Anglia, Sch Chem Sci & Pharm, Norwich NR4 7TJ, Norfolk, England
关键词
SINGLE QUANTUM DOTS;
D O I
10.1021/jp064570i
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A novel organometallic synthesis method for the preparation of colloidal ZnS nanoparticles is presented. This method enables the synthesis of undoped ZnS nanocrystals as well as doping with Cu, Pb, or both. The particles can be covered with an undoped layer of ZnS, forming core/shell-type particles with the ZnS: Pb, ZnS: Cu, or ZnS: Cu, Pb cores. The particles were characterized via TEM, XRD, dynamic light scattering, and optical spectroscopy. We investigated the extrinsic surface defects and their coverage with an additional ZnS layer in detail by temperature-dependent luminescence and luminescence lifetime spectroscopy.
引用
收藏
页码:23175 / 23178
页数:4
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