文献类型：期刊文献

英文题名：Molecular Ordering in Low-Dimensional Hybrid Perovskites for Improved X-Ray Detection

作者：Zeng, Sihan[1];Sui, Xinyuan[1];Liu, Da[1];Peng, Yu[1];Li, Qing[1];Song, Mengyao[1];Qian, Junjie[1];Yuan, Haiyang[1];Yang, Shuang[1];Yang, Hua Gui[1];Hou, Yu[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn, Key Lab Ultrafine Mat,Minist Educ, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2025

卷号：64

期号：29

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20252218530846);WOS:【SCI-EXPANDED(收录号:WOS:001495451400001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (22379044, 52203330, and 22472053), the Science and Technology Commission of Shanghai Municipality (23520710700), the Key Program of the National Natural Science Foundation of China (22239001), the Shanghai Pilot Program for Basic Research (22TQ1400100-5), the "Dawn" Program of Shanghai Education Commission (22SG28), the Shanghai Sailing Program (22YF1410000), the Fundamental Research Funds for the Central Universities (JKD01241607 and JKVD1241041), the Shanghai Engineering Research Center of Hierarchical Nanomaterials (18DZ2252400), the Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism (Shanghai Municipal Education Commission), and the Research Center of Analysis and Test of East China University of Science and Technology.

语种：英文

外文关键词：Low-dimensional perovskite; Molecular ordering; X-ray detection; pi-pi stacking

摘要：Low-dimensional hybrid perovskites are emerging semiconductors with excellent photophysical property, chemical stability, and structural diversity and have shown prominence in the fields of solar cells, light-emitting diodes, and X-ray detectors. To date, the inorganic framework structure in perovskites has been intensively studied, but the molecular arrangement of organic counterparts and its impact on physical properties remains largely unexplored. Herein, we engineer the coordination geometry of inorganic and organic building units to implement molecular ordering and pi-pi stacking in low-dimensional perovskites. We observe a positive dependence of carrier transport capacity and environmental stability on the molecular regularity in hybrid perovskites. Furthermore, 5-aminoquinoline lead iodide single crystal with the highest regularity exhibit nearly 5-fold increased carrier mobility-lifetime product and 20-fold decreased ionic conductivity along [011] than [100] orientation, enabling a high sensitivity of 8.25 x 105 mu C Gyair-1 cm-2 under 8 keV X-ray radiation for radiation detection application. This work sheds light on the design and synthesis of next-generation perovskite-based semiconductors with enhanced performance and stability for optoelectronic applications.