Exciton Emission Intensity Modulation of Monolayer MoS₂ via Au Plasmon Coupling.

ABSTRACT: Modulation of photoluminescence of atomically thin transition metal dichalcogenide two-dimensional materials is critical for their integration in optoelectronic and photonic device applications. By coupling with different plasmonic array geometries, we have shown that the photoluminescence intensity can be enhanced and quenched in comparison with pristine monolayer MoS₂. The enhanced exciton emission intensity can be further tuned by varying the angle of polarized incident excitation. Through controlled variation of the structural parameters of the plasmonic array in our experiment, we demonstrate modulation of the photoluminescence intensity from nearly fourfold quenching to approximately threefold enhancement. Our data indicates that the plasmonic resonance couples to optical

SUBMITTER: Mukherjee B 

PROVIDER: S-EPMC5278406 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature