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Colloidal quantum dot photodetectors enhanced by self-assembled plasmonic nanoparticles
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10.1063/1.3567514
/content/aip/journal/apl/98/11/10.1063/1.3567514
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/11/10.1063/1.3567514
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic drawings of a plasmonic QD photodetector. (a) 3D top view schematics, and (b) cross-section view along the dash line in Fig. 1(a).

Image of FIG. 2.
FIG. 2.

Plasmonic Ag NP deposition by self-assembly process. Dark field images of an electrode-patterned substrate (a) before, and (b) after Ag NP deposition. (c) Dark field scattering spectrum of Ag NPs on glass substrate. A resonance is shown at 415 nm.

Image of FIG. 3.
FIG. 3.

Device responsivity and enhancement results. (a) Responsivity for two QD photodetectors of 440 nm film thickness with (dashed line) and without (dashed-dotted line) Ag NPs. (b) Dashed lines: responsivity enhancement for devices with 440 nm [gray (green online)] and 100 nm [black (blue online)] film thicknesses. Dotted lines: absorption enhancement of QD film with 440 nm [gray (green online)] and 100 nm [black (blue online)] film thicknesses. Devices were biased at 20 V for responsivity measurement results in Figs. 3(a) and 3(b).

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/content/aip/journal/apl/98/11/10.1063/1.3567514
2011-03-16
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Colloidal quantum dot photodetectors enhanced by self-assembled plasmonic nanoparticles
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/11/10.1063/1.3567514
10.1063/1.3567514
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