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Enhancement of the Purcell effect for colloidal CdSe/ZnS quantum dots coupled to silver nanowires by a metallic tip
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10.1063/1.4729890
/content/aip/journal/apl/100/25/10.1063/1.4729890
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/25/10.1063/1.4729890
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The experimental setup for enhancing the coupling efficiency between colloidal CdSe/ZnS QDs and an Ag NW using an AFM metallic tip.

Image of FIG. 2.
FIG. 2.

(a) The SEM image of a single Ag NW synthesized by chemical methods. (b) The photoluminescence spectrum of the colloidal CdSe/ZnS core/shell QDs. (c) The fluorescence image of an Ag NW with colloidal CdSe/ZnS QDs.

Image of FIG. 3.
FIG. 3.

The calculated electric field 2E distribution from the finite-element method for an Ag NW (a) without and (b) with a metallic tip and 5 nm in the separation between the NW and the tip. The length and diameter of this Ag NW are 4 μm and 80 nm.

Image of FIG. 4.
FIG. 4.

(a) The photoluminescence spectra from the colloidal QDs deposited on the Ag NW with (blue line) and without (red line) a metallic tip. The black spectrum is the QD emission with an Au tip but without Ag nanowire. (b) The time-resolved fluorescence decay curves from the pure colloidal QDs (black), the QDs deposited on an Ag NW (blue) without a metallic tip, and QDs deposited on a Ag NW in the presence of a metallic tip with varied separations of 25 nm (red), 15 nm (pink), and 5 nm (green).

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/content/aip/journal/apl/100/25/10.1063/1.4729890
2012-06-21
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Enhancement of the Purcell effect for colloidal CdSe/ZnS quantum dots coupled to silver nanowires by a metallic tip
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/25/10.1063/1.4729890
10.1063/1.4729890
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