Temperature Dependence of Luminescence of CdS: Mn/ZnS Core-Shell Quantum Dots

被引：1
|
作者：
Fang Dai-Feng [1 ]
Wang Zhong-Ping [2 ]
Dai Ru-Cheng [2 ]
Zhang Zeng-Ming [2 ]
Ding Ze-Jun [1 ]
机构：
[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China
[2] Univ Sci & Technol China, Ctr Phys Expt, Hefei 230026, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2014年 / 31卷 / 05期
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
CDS/ZNS CORE/SHELL NANOCRYSTALS; PHOTOLUMINESCENCE PROPERTIES; OPTICAL-PROPERTIES; REVERSE MICELLES; NANOPARTICLES; MN; EMISSIONS; PRECURSOR; DYNAMICS; POLYMER;
D O I：
10.1088/0256-307X/31/5/057801
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Luminescence intensity of CdS:Mn/ZnS core-shell quantum dots (QDs) can be strongly enhanced in comparison with bulk CdS:Mn and nanoparticles, while the luminescence due to the surface state is greatly suppressed by a capping ZnS shell. We find that with the increasing temperature, the peak position of CdS: Mn/ZnS core-shell QDs blue shifts due to the reduction of phonon coupling. Unlike the bulk CdS: Mn, the luminescence of the core-shell QDs is less sensitive to thermal quenching.
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页数：5
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