AVS 65th International Symposium & Exhibition
    Electronic Materials and Photonics Division Thursday Sessions
       Session EM+MI+MN+NS-ThM

Invited Paper EM+MI+MN+NS-ThM10
Nano-optical Activation of Defect-bound Excitons in Monolayer WSe2: Towards Room-temperature 2D Single-photon Optoelectronics

Thursday, October 25, 2018, 11:00 am, Room 101A

Session: Nanostructures for Electronic and Photonic Devices
Presenter: Jim Schuck, Columbia University
Correspondent: Click to Email
The emergence of two-dimensional (2D) monolayer transition metal dichalcogenides (1L-TMDC) as direct bandgap semiconductors has rapidly accelerated the advancement of room temperature, 2D optoelectronic devices. Optical excitations on the TMDCs manifest from a hierarchy of electrically tunable, Coulombic free-carrier and excitonic many-body phenomena. In our most recent nano-optical investigations of these materials, we have demonstrated that a model hybrid architecture, a nano-optical antenna and a 1L-WSe2 nanobubble, activates the optical activity of BX states at room temperature and under ambient conditions. These results show that engineered bound-exciton functionality as, in this case, localized nanoscale light sources, can be enabled by an architectural motif that combines localized strain and a nano-optical antenna, laying out a possible path for realizing room-temperature single-photon sources in high-quality 2D semiconductors.