title: Orienting nanoantennas in three dimensions to control light scattering across a dielectric interface.
abstract: 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.
authors.affiliation: Department of Physics and Astronomy, ∥Department of Electrical and Computational Engineering, §Department of Chemistry, and ‡Laboratory for Nanophotonics, Rice University , 6100 Main Street, Houston, Texas 77005, United States.
authors.forename: Nicholas S
authors.initials: NS
authors.lastname: King
authors.forename: Mark W
authors.initials: MW
authors.lastname: Knight
authors.forename: Nicolas
authors.initials: N
authors.lastname: Large
authors.forename: Amanda M
authors.initials: AM
authors.lastname: Goodman
authors.forename: Peter
authors.initials: P
authors.lastname: Nordlander
authors.forename: Naomi J
authors.initials: NJ
authors.lastname: Halas
mesh_terms: D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology; D012993:Solar Energy; D020349:Surface Plasmon Resonance