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Enhanced semiconductor optical absorption via surface plasmon excitation in metal nanoparticles
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10.1063/1.1855423
/content/aip/journal/apl/86/6/10.1063/1.1855423
http://aip.metastore.ingenta.com/content/aip/journal/apl/86/6/10.1063/1.1855423
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic diagram of Si junction diode device structure with metallic nanoparticles. Illumination and measurement geometry employed to obtain photocurrent response data are also shown.

Image of FIG. 2.
FIG. 2.

Scanning electron micrographs of Au nanoparticles deposited on Si junction diode surfaces. Images are shown for devices with particles (a) 50 nm, (b) 80 nm, and (c) 100 nm in diameter.

Image of FIG. 3.
FIG. 3.

Extinction efficiency as a function of wavelength for Au nanoparticles 50, 80, and 100 nm in diameter suspended in aqueous solution. Peaks corresponding to excitation of plasmon resonances are clearly visible in each spectrum.

Image of FIG. 4.
FIG. 4.

(a) Photocurrent response as a function of illumination wavelength for Si junction diodes in the absence of nanoparticles, and with Au nanoparticles 50, 80, and 100 nm in diameter. (b) Photocurrent response spectra for diodes with Au nanoparticles 50, 80, and 100 nm in diameter from part (a), normalized to the photocurrent response measured in the absence of nanoparticles, revealing the increased response arising from the presence of the nanoparticles.

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/content/aip/journal/apl/86/6/10.1063/1.1855423
2005-02-02
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Enhanced semiconductor optical absorption via surface plasmon excitation in metal nanoparticles
http://aip.metastore.ingenta.com/content/aip/journal/apl/86/6/10.1063/1.1855423
10.1063/1.1855423
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