Two-Dimensional Halide Perovskites for Radiation Detection

Halide perovskites have recently emerged as promising candidates for ionizing radiation detection, owing to their high attenuation coefficient, long carrier diffusion length and lifetime, and large mobility-lifetime product. However, compared to the degradation of the three-dimensional (3D) halide perovskite devices for long-term operations resulting from the poor air stability and ionic migration, two-dimensional (2D) halide perovskites present better environmental and device stability. In this book chapter, a brief introduction of background and key parameters is provided to understand the X-ray detection clearly, followed by a systematically summary of recent achievements in X-ray detection based on 2D halide perovskites. We then briefly talk about 2D halide perovskite scintillators for α-, β-particles, X-, and γ-ray detection. Finally, the remaining challenges and future perspectives in the field of 2D halide perovskite radiation detectors are presented.