Photoluminescence Characteristics of ZnCuInS-ZnS Core-Shell Semiconductor Nanocrystals
Qiu-Lin Zhong, Ming-Rui Tan, Qing-Hui Liu** , Ning Sui, Ke Bi, Mou-Cui Ni** , Ying-Hui Wang, Han-Zhuang Zhang
Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun 130012
Abstract ：The photoluminescence (PL) characteristics of ZnCuInS quantum dots (QDs) with varying ZnS shell thicknesses of 0, 0.5, and 1.5 layers are investigated systemically by time-correlated single-photon counting measurements and temperature-dependent PL measurements. The results show that a ZnS shell thickness of 1.5 layers can effectively improve the PL quantum yield in one order of magnitude by depressing the surface trapping states of the core ZnCuInS QDs at room temperature. However, the PL measurements at the elevated temperature reveal that the core-shell nanocrystals remain temperature-sensitive with respect to their relatively thin shells. The temperature sensitivity of these small-sized single-layered core-shell nanocrystals may find applications as effective thermometers for the in vivo detection of biological reactions within cells.
收稿日期: 2016-12-03
出版日期: 2017-03-21
:
78.55.-m
(Photoluminescence, properties and materials)
68.65.Hb
(Quantum dots (patterned in quantum wells))
引用本文:
. [J]. 中国物理快报, 2017, 34(4): 47801-047801.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/34/4/047801
或
https://cpl.iphy.ac.cn/CN/Y2017/V34/I4/47801
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2017, Vol. 34 
