人工晶体学报2025，Vol.54Issue(7)：1256-1264,9.DOI:10.16553/j.cnki.issn1000-985x.2025.0018
BA2MA3Pb4I13相纯度调控及其对X射线探测的影响
Phase Purity Regulation of BA2MA3Pb4I13 and Its Influence on X-Ray Detection
摘要
Abstract
Two-dimensional Ruddlesden-Popper(RP)layered perovskites have received lots of attention in recent years due to their excellent optoelectronic properties and good environmental stability.Their unique properties make them ideal candidates for applications in solar cells,light-emitting diodes,and X-ray detectors.However,two-dimensional RP-type layered perovskites synthesized by solution methods typically exhibit mixed phases with random inorganic layer numbers(i.e.,multiple n-values),which hinders their application.In this study,the crystallization process of RP layered perovskites was regulated by replacing BAI with BA Ac to achieve effective phase purification.The enhancement in phase purity was confirmed by characterization methods,and the phase-purified perovskite material exhibits reduced defects.Consequently,significantly improved carrier extraction and transport capabilities,along with suppressed ion migration were achieved.These structural improvements directly enhanced the performance of the X-ray detectors.The phase-purified detectors exhibit lower detection limits(160.24 nGyair·s-1)compared to the unpurified devices,demonstrating stronger capability in low-dose X-ray detection.Additionally,the phase-purified device shows good irradiation stability.Therefore,phase purification not only effectively improved the detection performance of two-dimensional perovskite X-ray detectors but also enhanced device stability,proving the broad application prospects of phase-purification technology in perovskite X-ray detectors.关键词
调控结晶/二维钙钛矿/BAAc/相纯化/抑制离子迁移/X射线探测器Key words
regulated crystallization/two-dimensional perovskite/BAAc/phase purification/inhibition of ion migration/X-ray detector分类
能源科技引用本文复制引用
张爱平,魏亚洲,周昌垚,袁瑞涵,吴聪聪,郑霄家..BA2MA3Pb4I13相纯度调控及其对X射线探测的影响[J].人工晶体学报,2025,54(7):1256-1264,9.基金项目
四川省科技创新人才(2022JDRC0021) （2022JDRC0021）
