With the continuous progress of technology, the research and development of new materials has become a hot topic in today's scientific community. Among them, metal-free perovskite has attracted widespread attention due to its unique photoelectric properties and environmental friendliness. With continuous development, new progress has been made in the growth of metal-free perovskite single crystals and device research, and high-sensitivity metal-free perovskite single crystal X-ray detectors have been prepared. This article will delve into the principles of metal-free perovskite and its application in X-ray imaging.

Abstract

Metal-free perovskites are a promising class of materials for X-ray detection due to their unique structural, optical, and electrical properties. Here, we first delve into the stoichiometry and geometric argument of metal-free perovskites. Followed, the alternative A/B/X ions and hydrogen-bonding are clearly introduced to further optimize the materials’ stability and properties. Finally, we provide a comprehensive overview of their potential applications for flexible X-ray images and prospects for metal-free perovskite development. In conclusion, metal-free perovskite is a promising material for X-ray detection. Its stoichiometric and geometric parameters, ion, and hydrogen bond selection, and application prospects are worthy of further study.