Chem. Sci., 2025, Accepted Manuscript DOI: 10.1039/D5SC04089B, Edge Article Fang Liu, Yu Zou, Pengxiang Wang, Hu Wang, Jiahao Guo, Yugang Liang, Haifei Wang, Wenji Zhan, Zhengzheng Dang, Jixin Wu, Yanming Wang, Bowei Li, Yanfeng Miao, Yuetian Chen, Yao Wang, Yixin Zhao Perovskites are promising applied in self-powered X-ray detectors. However, the prone defects cause unsatisfactory sensitivity for the prepared devices. Tuning crystal orientation has been confirmed as an effective mean to...