Routing valley exciton emission of a monolayer via in-plane inversion-symmetry broken PhC slabs

The valleys of two-dimensional transition metal dichalcogenides (TMDCs) offer a new degree of freedom for information processing and have attracted tremendous interest for their possible applications in valleytronics. To develop valleytronics devices based on TMDCs, effective approaches to separate valleys in the near or far field are indispensable. In recent research, kinds of nanostructures are proposed to separate valleys and much progress has been made.

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