On-chip optical pumping of nanowire emitters using transfer-printed micro-LEDs

We report a technique for scalable electro-optical on-chip addressing of semiconductor nanowire emitters via transfer-printed micro-LEDs. Thus driven individual waveguide-coupled nanowires demonstrate small-signal modulation in the 10's MHz range at room-temperature. The integration of micro-LEDs with nanowire emitters on a chip provides localized scalable excitation without the need for external optics. This method therefore opens new routes for the realization of programmable high-density nanowire networks.