Citation: Wang Biwei, Liu Limin, Zhang Yi, Deng Yonghui, Dong Angang. A novel strategy for boosting the photoluminescence quantum efficiency of CdSe nanocrystals at room temperature[J]. Chinese Chemical Letters, ;2020, 31(1): 295-298. doi: 10.1016/j.cclet.2019.03.043 shu

A novel strategy for boosting the photoluminescence quantum efficiency of CdSe nanocrystals at room temperature

Wang Biwei ^a ,
Liu Limin ^a ,
Zhang Yi ^b ,
Deng Yonghui ^a ,
Dong Angang ^a,*,

a.
Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and Department of Chemistry, iChem, Fudan University, Shanghai 200433, China
b.
School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, China

agdong@fudan.edu.cn

Received Date: 5 March 2019
Revised Date: 23 March 2019
Accepted Date: 26 March 2019
Available Online: 27 January 2019

Figures(4)

Highly luminescent colloidal nanocrystals have wide applications in bioimaging and various optoelectronic devices. Herein we report a facile and mild procedure by combining S^2- treatment and binary ligand passivation, which can efficiently enhance the luminescent property of CdSe nanocrystals at room temperature. The photoluminescence quantum yield of as-treated CdSe nanocrystals exhibits drastic enhancement (e.g., 188 times for CdSe nanorods) after this dual-passivation treatment. The methodology proposed here can be applied to various CdSe nanocrystals, regardless of their sizes, shapes, and crystal structures.
- Photoluminescence,
- CdSe nanocrystals,
- Sulfur ions,
- Surface passivation,
- Room temperature
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