Arising Two‐dimensional Perovskites for Ionizing Radiation Detection

Abstract Two‐dimensional (2D) perovskites have greatly improved moisture stability owing to the large organic cations embedded in the inorganic octahedral structure, which also suppresses the ions migration and reduces the dark current. The suppression of ions migration by 2D perovskites effectively suppresses excessive device noise and baseline drift and shows excellent potential in the direct X‐ray detection field. In addition, 2D perovskites have gradually emerged with many unique properties, such as anisotropy, tunable band gap, high photoluminescence quantum yield, and wide range exciton binding energy, which continuously promote the development of 2D perovskites in ionizing radiation detection. This review aims to systematically summarize the advances and progress of 2D halide perovskite semiconductor and scintillator ionizing radiation detectors, including reported alpha (α) particle, beta (β) particle, neutron, X‐ray, and gamma (γ) ray detection. We discuss the unique structural features of 2D perovskites and their advantages in X‐ray detection. We also propose development directions to overcome the limitations of 2D halide perovskite radiation detectors. This article is protected by copyright. All rights reserved