Orienting Nanoantennas in Three Dimensions To Control Light Scattering Across a Dielectric Interface

Autor: Amanda M. Goodman, Peter Nordlander, Nicolas Large, Mark W. Knight, Nicholas S. King, Naomi J. Halas
Rok vydání: 2013
Předmět:
Zdroj: Nano Letters. 13:5997-6001
ISSN: 1530-6992
1530-6984
DOI: 10.1021/nl403199z
Popis: The light scattering properties of hemispherical resonant nanoantennas can be used to redirect normal incidence light to propagate within a thin film or thin film-based device, such as a solar cell, for enhanced efficiency. While planar nanoantennas are typically fabricated as simple nanoparticles or nanostructures in the film plane, here we show that a hemispherical nanoantenna with its symmetry axis tilted out of the plane accomplishes this task with far greater efficacy. The amount of light scattered into an underlying dielectric by the electric and magnetic dipole response of oriented nanocups can be more than three times that achieved using symmetric antenna structures.
Databáze: OpenAIRE