Enhancing light-matter interaction in 2D materials by optical micro/nano architectures for high-performance optoelectronic devices

Two-dimensional materials are a promising solution for next-generation electronic and optoelectronic devices due to their unique properties.Owing to the atomic thickness of 2D materials,the light-matter interaction length in 2D materials is much shorter than that in bulk materials,which limits the performance of optoelectronic devices composed of 2D materials.To improve the light-matter interactions,optical micro/nano architectures have been introduced into 2D material optoelectronic devices.In this review,we present a concise introduction and discussion of various strategies for the enhancement of lightmatter interaction in 2D materials,namely,the plasmonic effect,waveguide,optical cavity,and reflection architecture.We have outlined the current advances in high-performance 2D material optoelectronic devices(eg,photodetectors,electrooptic modulators,light-emitting diodes,and molecular sensors)assisted by these enhancement strategies.Finally,we have discussed the future challenges and opportunities of micro/nano photonic structure designs in 2D material devices.