Optical properties of colloidal PbSe nanocrystals

被引：437

作者：

Du, H

Chen, CL

Krishnan, R

Krauss, TD ^{[1
]}

Harbold, JM

Wise, FW

Thomas, MG

Silcox, J

机构：

[1] Univ Rochester, Dept Chem, Rochester, NY 14627 USA

[2] Univ Rochester, Dept Elect & Comp Engn, Rochester, NY 14627 USA

[3] Cornell Univ, Dept Appl Phys, Ithaca, NY 14853 USA

来源：

NANO LETTERS | 2002年 / 2卷 / 11期

关键词：

D O I：

10.1021/nl025785g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present the structural and optical characterization of colloidal PbSe nanocrystals. The lowest-energy exciton transitions in these structures, with diameters between 3 and 8 nm, occur at wavelengths between 1.0 and 1.85 mum. Band-edge luminescence spectra with quantum yields as high as 80% are observed. Unexpectedly long (similar to300 ns) luminescence lifetimes are observed. These properties are promising for applications in optoelectronics and microscopy.

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页码：1321 / 1324

页数：4

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