Solid–state NMR of hybrid halide perovskites

Recent advances in the development of perovskite based solar cells have increased the demand for in-depth characterisation of the perovskite structures and the dynamics of their various constituents in relation to the potential impact on the photovoltaic performance. NMR can play an important role in this respect; NMR has been used to study the incorporation of different ionic species, characterize their internal dynamics and diffusion, and monitor the chemical stability of these technologically relevant materials, including upcoming lower dimensional perovskite materials. Furthermore, the flexibility of NMR allows the study of the materials under relevant conditions e.g. under illumination. Here we present an overview of the recent literature on NMR of (hybrid) halide perovskites, focusing on the insights that NMR can provide. [Display omitted] •An overview of NMR studies of perovskites for solar cells is presented.•Solid-state NMR can observe all relevant nuclei in hybrid halide perovskites.•Detailed knowledge about the possible variations in chemical composition is obtained.•The dynamics of the various moieties can be determined.•The chemical stability toward water and oxygen can be monitored.