Challenges and Opportunities for CsPbBr₃ Perovskites in Low- and High-Energy Radiation Detection

Semiconductor-based light detection finds widespread application in everyday devices. Since the fabrication of commercial photodetectors requires complex and capital-intensive equipment, a search for semiconductors with low-cost processing is essential. To this end, hybrid organic-inorganic metal halide perovskites (MHPs) have gained interest due to their facile processing, in combination with their outstanding properties, such as efficient light absorption and high carrier mobility. Recently, all-inorganic CsPbBr 3 has emerged as a promising candidate for photodetection due to its favorable intermediate bandgap and superior photostability, thermal stability, and moisture stability. Different synthesis strategies have been adopted to obtain highly crystalline CsPbBr 3 perovskites with a large variety in morphology and dimension, each allowing for a specific photodetector application, e.g., cameras for hand-held devices, large-area flat panel detectors, and flexible light sensors. This Review provides a comprehensive overview and evaluation of the state-of-the-art preparation and photodetector integration of CsPbBr 3 single crystals, microcrystals, nanowires, thin films, and nanocrystals.