Using optical antennas in optoelectronic devices could lead to improved device performance. Photoemission from the inner core of core–shell single-walled nanotube structures where the optical bandgap of the core is smaller than that of the outer shells demonstrates that these structures channel excitons thereby acting as optical concentrators.
- Jae-Hee Han
- Geraldine L. C. Paulus
- Michael S. Strano
