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Berlin 2012 – scientific programme

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O: Fachverband Oberflächenphysik

O 34: Poster Session I (Graphene; Plasmonics and nanooptics; Coherence and coherent control in nanophotonics and plasmonics)

O 34.42: Poster

Tuesday, March 27, 2012, 18:15–21:45, Poster E

Plasmonically enhanced electro-optical effects in metal-semiconductor nanodevices — •Markus Parzefall1, Johannes Kern1, Monika Emmerling2, Martin Kamp2, Jord C. Prangsma1, and Bert Hecht11Experimental Physics 5, University of Würzburg, Germany — 2Technical Physics, University of Würzburg, Germany

Surface plasmon enhanced internal photoemission in nanostructured Schottky devices has recently gained attention due to its promising application in photodetection and solar energy conversion. Due to their resonant nature, metallic nanostructures have shown to increase the photocurrent generated in such devices by orders of magnitude. We experimentally investigate electro-optical effects in nanostructured Schottky diodes based on gold and titanium dioxide. Our main focus lies on the evaluation of new design principles for optimized incident photon to current conversion efficiency, spectral tunability and the achievement of a deeper understanding of the underlying physics.

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