Charge carrier mobility of halide perovskite single crystals for ionizing radiation detection

Halide perovskites have recently emerged as promising semiconductor materials for several applications including solar cells, light-emitting diodes, and radiation detectors. The charge carrier transport properties, which could be evaluated by the mobility-lifetime (mu-tau or mu-Gamma) product, serve an important role for the development of halide perovskites for radiation detection applications. In this Perspective, we first explain the charge transport mechanism and the limiting factors that determine the intrinsic charge carrier mobility in halide perovskite single crystals. Then, we overview the techniques and methods that have been employed for evaluating the charge carrier mobility (for both electrons and holes). Finally, we discuss the discrepancy in the experimentally determined carrier mobility from the literature for halide perovskite single crystals, and provide a perspective on future developments for carrier mobility enhancement. Published under an exclusive license by AIP Publishing.

Automated summary

Halide perovskites have emerged as promising semiconductor materials for various applications, including solar cells, light-emitting diodes, and radiation detectors. Understanding charge carrier transport properties is crucial for the development of halide perovskites for radiation detection. This Perspective explains the charge transport mechanism, evaluates charge carrier mobility, and discusses discrepancies in experimentally determined carrier mobility, as well as future directions for enhancement.