Cesium‐Based Molecular Perovskites With Superior Stability for High‐Performance X‐Ray Detection

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Metal-free molecular perovskites have shown great potential for X-ray detection due to their tunable chemical structures, low toxicity, and excellent photophysical properties. However, limited absorption environmental instability restrict practical application. In this study, cesium-based (MDABCO-CsX3, X = Cl, Br, I) are developed by introducing Cs+ at the B-site enhance while retaining toxicity. The effects of halide modulation on physical properties device performance systematically investigated. Among variants, MDABCO-CsBr3 exhibited superior stability, attributed optimal ionic radius high stability Br-. This is further enhanced a higher tolerance factor, which promotes stable 3D cubic structure suppresses ion migration within crystal. Consequently, MDABCO-CsBr3-based detectors demonstrated reduced migration, minimal dark current drift, response under exposure, achieving sensitivity 4124 µC Gy-1 cm-2 limit 0.45 µGy s-1. Moreover, devices exhibit thermal operating effectively temperatures up 130 °C. These results highlight as promising candidate efficient detection, expanding applicability in advanced radiation technologies.

Language: Английский

Metal–organic framework radiochromic materials: Recent advances and applications

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 534, P. 216616 - 216616

Published: March 15, 2025

Language: Английский

Alkynyl copper(I) nanoclusters with thermally activated delayed fluorescence as efficient scintillator for X-ray imaging

Science China Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 22, 2025

Language: Английский