Formation of PbSe/CdSe Core/Shell Nanocrystals for Stable Near-Infrared High Photoluminescence Emission

被引：0

作者：

Yu Zhang

Quanqin Dai

Xinbi Li

Qingzhou Cui

Zhiyong Gu

Bo Zou

Yiding Wang

William W Yu

机构：

[1] Jilin University,State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering

[2] Worcester Polytechnic Institute,Department of Chemistry and Biochemistry

[3] University of Massachusetts Lowell,Department of Chemistry Engineering

[4] Jilin University,State Key Laboratory of Superhard Materials

来源：

Nanoscale Research Letters | / 5卷

关键词：

PbSe; CdSe; Core–shell; Near infrared; Emission; Nanocrystals;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

PbSe/CdSe core/shell nanocrystals with quantum yield of 70% were obtained by the “successive ion layer adsorption and reaction” technology in solution. The thickness of the CdSe shell was exactly controlled. A series of spectral red shifts with the CdSe shell growth were observed, which was attributed to the combined effect of the surface polarization and the expansion of carriers’ wavefunctions. The stability of PbSe nanocrystals was tremendously improved with CdSe shells.

引用

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