Photonics and optoelectronics using nano-structured hybrid perovskite media and their optical cavities

This review focuses on the physics of optical excitation dynamics, band gap engineering and charge carrier dynamics in metal-halide perovskites and their organic hybrids as well as on their technological applications. The role of plasmonic coupling and photonic cavities in enhancing light–matter interactions and manipulating carrier dynamics is clearly presented by examples of studies of perovskite–hybrid plasmonic nanostructured perovskite cavities. Perovskite metasurface is a nascent approach to enhancing photonic device performance that is also briefly described. In addition, nonlinear optical interactions and charge carrier dynamics in (pseudo-) 2D perovskites and photonic structures are discussed. We discuss how photonic communication between a perovskite layer and an interlayer of photoactive organic material in hybrid perovskites contributes to new designs for novel devices. Applications covered are: photodetectors, solar cells, light-emitting diodes and nanolasers, displays, waveguides and modulators, and nonlinear optical devices. Device performance is enhanced by incorporating nanophotonics design concepts. The review concludes with a discussion of technical challenges. New opportunities in multiscale modeling, perovskites with epsilon near zero, perovskites–plasmonic semiconductors, perovskite sensors and quantum applications are presented also presented in the concluding outlook section.