期刊
NANO LETTERS
卷 13, 期 12, 页码 5997-6001出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl403199z
关键词
Plasmon; nanoparticles; nanocup; nanoshell; nanoantenna; symmetry breaking; scattering; dielectric interface; total internal reflection
类别
资金
- National Security Science and Engineering Faculty Fellow Grant [N00244-09-1-0067]
- U.S. Army Research Laboratory
- U.S. Army Research Office [W911NF-12-0407]
- Robert A. Welch Foundation [C-1220, C-1222]
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.
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