Photoluminescence enhancement in monolayer MoS2 and self-assembled 3D photonic crystal heterostructures

Self-assembled photonic crystals (PCs) have promising applications in enhancing and directional manipulation of the photoemission due to their photonic bandgaps. Here, we employed self-assembled 31) polystyrene PCs to enhance the photoluminescence (PL) of monolayer molybdenum disulfide (MoS2). Through tuning the photonic bandgap of the polystyrene crystals to overlap with the direct emission band of monolayer MoS2, the MoS2/3D-PC heterostructure showed a maximum 12-fold PL enhancement, and Rabi splitting was also observed in the reflection spectrum. The heterostructure is expected to be useful in nanophotonic emitting devices. (C) 2022 Optica Publishing Group

Automated summary

Self-assembled photonic crystals are used to enhance the photoluminescence of monolayer molybdenum disulfide, resulting in a maximum 12-fold enhancement and observed Rabi splitting in the reflection spectrum.