Förster Resonance Energy Transfer in Metal Halide Perovskite: Current Status and Future Prospects

Abstract Förster Resonance Energy Transfer (FRET) is a non‐radiative energy transfer process in a donor‐acceptor system and has applications in various fields, such as single‐molecule investigations, biosensor creation, and deoxyribonucleic acid (DNA) mechanics research. The investigation of FRET processes in metal halide perovskites has also attracted great attention from the community. The review aims to provide an up‐to‐date study of FRET in the context of perovskite systems. First, we discuss the fundamentals of FRET process, and then summarize the recent progress of FRET phenomenon in perovskite‐perovskite, perovskite‐inorganic fluorophores, perovskite‐organic fluorophores, and organic fluorophores‐perovskite systems. Finally, we speculate on the future prospects of roles of FRET in the implications for the overall performance of optoelectronic devices based on these systems, as well as the challenges in maximizing FRET efficiency.