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.

引用

页数：5

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