ABSTRACT
This chapter describes the prospects of integration of Two-dimensional (2D) materials with photonic nanostructures to enable future active nanophotonic devices. It focuses on development of controlling light emission from transition metal dichalcogenides (TMD) by nanophotonic integration. The monolayer form demonstrates a range of novel optical effects, including strong excitonic effects, photo-luminescence , valley polarisation, single-photon emission and second-harmonic generation, which show great potential for fabricating novel “flat” active nanophotonic devices in the future. Integration with photonic nanostructures is a solution to such challenges, since photonic nanostructures such as plasmonic nanoparticles show great capability to manipulate light–matter interaction at the nanoscale. A greater understanding of the coupling between photonic nanostructures and 2D materials is required, thus potentially better controlling the properties of these materials. For example, non-linear coupling between 2D materials, especially second-order non-linearity, has attracted intense interest. Dielectric nanostructures, such as photonic crystal cavities, have also been proposed for enhancing the emission from TMD monolayers.
