Large enhancement of fluorescence efficiency from CdSe/ZnS quantum dots induced by resonant coupling to spatially controlled surface plasmons

被引：324

作者：

Song, JH

Atay, T

Shi, SF

Urabe, H

Nurmikko, AV ^{[1
]}

机构：

[1] Brown Univ, Div Engn, Providence, RI 02912 USA

[2] Brown Univ, Dept Phys, Providence, RI 02912 USA

来源：

NANO LETTERS | 2005年 / 5卷 / 08期

关键词：

D O I：

10.1021/nl050813r

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nanoengineered fluorescent response is reported from semiconductor core-shell (CdSe/ZnS) quantum dots in proximity to the surface plasmon polariton field of periodic Ag nanoparticle arrays. Tuning the surface plasmon polariton resonance to the quantum dot exciton emission band results in an enhancement of up to similar to 50-fold in the overall fluorescence efficiency, in a design where each Ag nanoparticle is interconnected by a continuous Ag thin film. Propagating modes of surface plasmon resonances have a direct impact on the fluorescence enhancement.

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页码：1557 / 1561

页数：5

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