Quantum Yields and Time-Resolved Spectroscopy in CdSe and CdSe/ZnS Nanocrystals

被引：5
|
作者：
Kim, Sang Min [1 ]
Yang, H. S. [1 ]
Ha, M. G. [2 ]
Jeong, E. D. [2 ]
Hong, K. S. [2 ]
机构：
[1] Pusan Natl Univ, Dept Phys, Pusan 609735, South Korea
[2] Korea Basic Sci Inst, High Technol Components & Mat Res Ctr, Pusan 618230, South Korea
来源：
JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2010年 / 56卷 / 01期
关键词：
CdSe; CdSe/ZnS; Nanocrystals; Quantum yield; Time-resolved spectroscopy; OPTICAL-PROPERTIES; DOTS;
D O I：
10.3938/jkps.56.467
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We synthesized CdSe and CdSe/ZnS nanocrystals having various surface conditions by controlling the amounts of organic solvents and using the chemical colloidal method, and we measured their optical properties. We showed that the ZnS-capped CdSe nanocrystals exhibited a large enhancement of the fluorescence intensity, and that the efficiency of the quantum yield and the decay times of photoluminescence changed. We observed the changes in photoluminescence decay times for various surface conditions of CdSe and CdSe/ZnS nanocrystals by using time-resolved spectroscopy.
引用
收藏
页码：467 / 471
页数：5
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