Cation exchange assisted synthesis of ZnCdSe/ZnSe quantum dots with narrow emission line widths and near-unity photoluminescence quantum yields

被引：53

作者：

Jin, Xiao ^{[1
,2
]}

Xie, Kanlin ^{[2
]}

Zhang, Tingting ^{[2
]}

Lian, Huada ^{[2
]}

Zhang, Zhenghe ^{[2
]}

Xu, Bing ^{[2
]}

Li, Dongyu ^{[1
,2
]}

Li, Qinghua ^{[1
,2
]}

机构：

[1] Lingnan Normal Univ, Key Lab Clean Energy Mat Chem Guangdong Higher Ed, Zhanjiang 524048, Peoples R China

[2] Lingnan Normal Univ, Key Lab Environm Friendly Funct Mat & Devices, Zhanjiang 524048, Peoples R China

来源：

CHEMICAL COMMUNICATIONS | 2020年 / 56卷 / 45期

关键词：

CDSE/CDS CORE/SHELL NANOCRYSTALS; SHELL THICKNESS; SIZE;

D O I：

10.1039/d0cc01302a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Quantum dots with narrow emission line width have persistently received attention for their applications in biological imaging, lasers and next-generation displays. We herein report a cation exchange assisted shelling approach changing the starting CdSe emitting cores into new ZnCdSe alloy emitting cores and finally ZnCdSe/ZnSe core/shell QDs. The resulting ZnCdSe/ZnSe QDs exhibit an emission line width as narrow as 17.1 nm with a near-unity photoluminescence quantum yield and a single emission channel. We anticipate that our study on a cation exchange assisted synthetic route for controlling the emission line widths of the QDs could be extended to high-quality green and blue ones beyond currently achieved.

引用

页码：6130 / 6133

页数：4

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