Carrier Diffusion Links Single Crystal Quality and Photoluminescence in Halide Perovskite Radiation Detectors.

ABSTRACT: Halide perovskites have emerged as promising materials for next-generation radiation detectors, echoing their transformative impact on photovoltaics. Due to the long penetration depths of X-rays and γ-rays, thick single crystals are required to sufficiently attenuate the radiation, making bulk crystal quality critical for device performance. Photoluminescence properties, particularly long lifetimes and redshifted emission peaks, are commonly used as proxies for identifying high-quality CsPbBr₃ crystals for high-performance detectors, yet the physical origin of this correlation remains unclear. Here, complementary photoluminescence techniques with a full-spectrum fit are combined to reveal the importance of vertical diffusion in governing photoluminescence response, ultimately sh

SUBMITTER: Wei Z 

PROVIDER: S-EPMC12810622 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature