Epitaxial Integration of Multiple CdSe Quantum Dots in a Colloidal CdS Nanoplatele

被引：12

作者：

Chen, Dongdong ^{[1
,2
,3
]}

Lei, Hairui ^{[1
,2
]}

Zhu, Chenqi ^{[1
,2
]}

Chen, Xing ^{[4
]}

Tian, He ^{[4
]}

Fang, Wei ^{[1
,2
,3
]}

Qin, Haiyan ^{[1
,2
]}

Peng, Xiaogang ^{[1
,2
]}

机构：

[1] Zhejiang Univ, Key Lab Excited State Mat Zhejiang Prov, Hangzhou 310027, Peoples R China

[2] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China

[3] Zhejiang Univ, Coll Opt Sci & Engn, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Peoples R China

[4] Zhejiang Univ, Ctr Electron Microscopy, Sch Mat Sci & Engn, Hangzhou 310027, Peoples R China

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2022年 / 144卷 / 19期

基金：

中国国家自然科学基金;

关键词：

SELF-ORGANIZATION; NANOCRYSTALS; SIZE; THICKNESS; TRANSPORT; GROWTH;

D O I：

10.1021/jacs.2c01498

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Presynthesized CdSe/CdS core/shell quantum dots (QDs) are two-dimensionally (2D) and epitaxially fused insolution to form a CdS nanoplatelet with multiple epitaxially embedded CdSe QDs (CdSe@CdS coupled-dots@platelet). Inaddition to providing spatial confinement for the excitonic states of multiple CdSe QDs in a CdS nanoplatelet, the continuous andsingle-crystalline nanoplatelet with controlled thickness enables quantum coupling between the CdSe QDs, resulting ininhomogeneous-free optical properties for the colloidal CdSe@CdS coupled-dots@nanoplatelets with bright photoluminescence.The results here suggest that solution synthesis can offer a simple means to obtain semiconductor nanocrystals for realizing uniqueyet complex excitonic properties that are otherwise difficult to achieve

引用

页码：8444 / 8448

页数：5

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