Colloidal PbS nanocrystals with size-tunable near-infrared emission: Observation of post-synthesis self-narrowing of the particle size distribution

被引：1550

作者：

Hines, MA ^{[1
]}

Scholes, GD ^{[1
]}

机构：

[1] Univ Toronto, Dept Chem, Toronto, ON M5S 3H6, Canada

来源：

ADVANCED MATERIALS | 2003年 / 15卷 / 21期

关键词：

D O I：

10.1002/adma.200305395

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The synthesis of nanocrystalline PbS quantum dots using organometallic precursors is reported. The samples exhibit tunable, strong near-infrared photoluminescence. A remarkable spontaneous self-directed narrowing of the particle sized distribution is shown to occur after the particles are synthesized and dispersed in organic solvent. The Figure shows the tuning of band-edge exciton absorption features through the near-infrared spectral region according to particle size.

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页码：1844 / 1849

页数：6

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