文献类型：期刊文献

英文题名：Quasi-One-Dimensional Perovskite Single Crystals Enabling Decoupled Ionic-Electronic Transport for Sensitive and Stable X-ray Detection

作者：Liu, Da[1];Liu, Xinyi[1];Wei, Zhanpeng[1];Zhu, Yuchen[1];Zeng, Sihan[1];Li, Qing[1];Li, Yalu[1];Song, Mengyao[1];Peng, Yu[1];Yang, Shuang[1];Yang, Hua Gui[1];Hou, Yu[1]

机构：[1]East China Univ Sci & Technol, Key Lab Ultrafine Mat, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn,Minist Educ, Shanghai, Peoples R China

年份：2026

卷号：65

期号：12

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20260720052504);WOS:【SCI-EXPANDED(收录号:WOS:001684865100001)】；

基金：This work was financially supported by National Natural Science Foundation of China (22379044, 52203330), Scientific Research Innovation Capability Support Project for Young Faculty (SRICSPYF-ZY2025085), Science and Technology Commission of Shanghai Municipality (23520710700), Key Program of the National Natural Science Foundation of China (22239001), Shanghai Pilot Program for Basic Research (22TQ1400100-5), Shanghai Municipal Natural Science Foundation (25ZR1401081), the Fundamental Research Funds for the Central Universities (JKD01251505, JKVD1251041), the Postdoctoral Fellowship Program of CPSF (GZC20250071), Shanghai Engineering Research Center of Hierarchical Nanomaterials (18DZ2252400), and Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism (Shanghai Municipal Education Commission).

语种：英文

外文关键词：ionic-electronic transport; metal halide perovskite; quasi-one-dimensional; x-ray detection

摘要：Metal halide perovskites are promising candidates for low-cost and sensitive x-ray detection. However, the existing perovskite materials with diverse composition and dimensionality encounter an intrinsictrade-off between carrier collection and ion migration, posing a critical challenge for high-energy x-ray detection. Here, we demonstrated that the quasi-one-dimensional perovskite of cystamine lead iodide featuring corner-sharing [Pb5I22] chains chain and small interchain spacing along edge-on orientation enables efficient carrier collection and blocked ion migration simultaneously, and thus largely decouple the electronic and ionic transport pathways. The as-grown single crystals yield a large mobility-lifetime product of 4.35 x 10-4 cm2 V-1, and a high activation energy for ion migration of 0.94 eV. Therefore, an impressive x-ray sensitivity of 1.42 x 105 mu C Gy-1 cm-2 (average x-ray energy 42.7 keV) are obtained in quasi-one-dimensional perovskite. Under harsh conditions, such as continuous radiation, high electric fields, and high temperatures, the device exhibits excellent operational stability. As a proof of concept, the robust integration of a quasi-one-dimensional perovskite with a thin-film transistor backplane for x-ray imaging was achieved. This study offers innovative insights into the regulate the structural dimensions of materials for sensitive and stable x-ray detection.