Opening the light extraction cone of high index substrates with plasmonic gratings: Light emitting diode applications

Drezet, A.; Przybilla, F.; Laux, E.; Mahboub, O.; Genet, C.; Ebbesen, T. W.; Bouillard, J. S.; Zayats, A.; Spevak, I. S.; Zayats, A. V.; Nikitin, A. Yu; Martín-Moreno, L.
July 2009
Applied Physics Letters;7/13/2009, Vol. 95 Issue 2, p021101
Academic Journal
The opening of the light extraction cone of a high index substrate (GaP) is demonstrated using plasmonic gratings. We show that the excitation of surface plasmons on the metal grating leads to the extraction of light otherwise undergoing total internal reflection in the substrate with high efficiency. This effect has an immediate application in the context of light emitting diodes, where resonant metal gratings are promising for the design of dual purpose electric contact/extraction structures.


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