View article

The ability to modify semiconductor optical properties using nanostructures that support surface plasmon resonances has enabled the demonstration of improved light-management in conventional opto-electronic devices, such as light-emitting diodes,[1–3] lasers,[4] and photovoltaic devices,[5, 6] as well as in integrated optical computing and light localization on the nanoscale.[7–11] In particular, resonant plasmonic nanoantennas can be used to control the polarization, directivity, light-emission intensity and decay rate of coupled emitters via the large local density of optical states in the nanoantenna’s near-field.[7–16] Recent theoretical studies have proposed linear metal–semiconductor–metal nanoantennas where semiconductor material is incorporated into a central ‘slot region’of a noble metal nanorod, in analogy to the feed element in radio frequency antennas.[11, 17] This not only allows the full benefit of …