@article{Li2026, 
author = {Jingyu Li and Jiawen Xiao and Haoyang Guan and Zhuoer Cai and Zheng‐Guang Yan and Yaping Du and Xiaodong Han},
title = {La‐Tuned Scintillators With Nanosecond Response and High Flexibility for Blur‐Free X‐Ray Imaging},
year = {2026},
journal = {SmartMat},
volume = {7},
number = {3},
pages = {e70090},
keywords = {hybrid perovskite, rare earths, scintillator, X‐ray imaging},
url = {https://www.sciopen.com/article/10.1002/smm2.70090},
doi = {10.1002/smm2.70090},
abstract = {The integration of real‐time and flexible imaging has significantly advanced X‐ray scintillator imaging technologies. However, combining both functionalities into a single scintillator material remains a fundamental challenge. To address this, we designed a zero‐dimensional cerium (Ⅲ)‐based organic‐inorganic hybrid halide scintillator, MPH2CeCl5·3H2O (MPH = morpholine), using low‐cost solution processing and leveraging Ce (Ⅲ)'s inherently nanosecond‐scale 4f–5d transitions. La3+‐alloying induced a dual effect, enhancing the photoluminescence quantum yield to 2.75 times the original value while maintaining a short decay time of approximately 22 ns. Combined with heavy‐atom effects, this nanosecond‐scale decay prompted investigation of X‐ray scintillation performance, revealing a respectable light yield of 10,400 photons/MeV and a low detection limit of 96.73 nGyair/s. By embedding the optimized MPH2CeCl5·3H2O into poly(methyl methacrylate) (PMMA), we fabricated a high‐performance flexible film that mitigates material hygroscopicity while enabling outstanding flexibility and dynamic imaging capabilities. This film achieved motion‐artifact‐free dynamic imaging at 100 fps, clearly resolving blades rotating at 560°/s. This work demonstrates Ce (Ⅲ)‐based halide hybrids as promising platforms for advanced medical and industrial imaging, offering high light yield, rapid response, and superior processability.}
}