biostudies-literatureUnknown2(10)Valli DOwing to their outstanding optoelectronic properties, halide perovskite (HP) materials have been employed in a wide range of applications, including solar cells, light-emitting devices, and X-ray detectors. Among them, lead-free double HPs are characterized by enhanced stability and reduced toxicity compared with lead-based alternatives. Cs₂AgBiBr₆, in particular, has emerged as a promising candidate for direct X-ray detection. The detection sensitivity, on the other hand, cannot yet compete with that of lead-containing perovskites. Developing schemes to improve X-ray detection efficiency is critical for reducing radiation exposure in medical imaging applications. Here, we investigate the potential of controlled doping and cation substitution with either lanthanides oACS applied optical materials2075-2084https://www.ebi.ac.uk/biostudies/studies/S-EPMC11519909biostudies-literatureEnhancing the X-ray Sensitivity of Cs<sub>2</sub>AgBiBr<sub>6</sub> Double Perovskite Single Crystals through Cation Engineering.PMC11519909Valli DEscudero DZhu ZZhang HWang HDebroye EGrill RBetusiak MRomolini GBelas EBonn MZhao QMeulemans ASeth SHofkens JfalseEnhancing the X-ray Sensitivity of Cs<sub>2</sub>AgBiBr<sub>6</sub> Double Perovskite Single Crystals through Cation Engineering.Owing to their outstanding optoelectronic properties, halide perovskite (HP) materials have been employed in a wide range of applications, including solar cells, light-emitting devices, and X-ray detectors. Among them, lead-free double HPs are characterized by enhanced stability and reduced toxicity compared with lead-based alternatives. Cs₂AgBiBr₆, in particular, has emerged as a promising candidate for direct X-ray detection. The detection sensitivity, on the other hand, cannot yet compete with that of lead-containing perovskites. Developing schemes to improve X-ray detection efficiency is critical for reducing radiation exposure in medical imaging applications. Here, we investigate the potential of controlled doping and cation substitution with either lanthanides o2024-01-01T00:00:00Z2024 Oct2025-04-19T18:12:06.932Z2025-04-19T18:12:06.932ZS-EPMC115199093947917810.1021/acsaom.4c00265