High-Quality Cs<sub>3</sub>Cu<sub>2</sub>I<sub>5</sub>@PMMA Scintillator Films Assisted by Multiprocessing for X-ray Imaging
Wei Zhou, Xiaodie Zhu, Jing Yu, Dedan Mou, Hongxing Li, Lingyu Kong, Tianchun Lang, Lingling Peng, Wenbo Chen, Xuhui Xu, Bitao Liu
Abstract
In recent years, novel metal halide scintillators have shown great application potential due to their tunable emission wavelength, high X-ray absorption, and high luminescence efficiency. However, poor stability and complex device packaging remain key issues for metal halide scintillators, making it difficult to achieve high-resolution and flexible X-ray imaging applications. To address the above issues, a multiprocessing strategy was introduced to prepare Cs 3 Cu 2 I 5 @PMMA scintillator films for long-term stable application, mainly undergo different annealing treatments to make Cs 3 Cu 2 I 5 crystals to accurately nucleate and then grow in-situ in the PMMA matrix. Then, a series of characterization results illustrate that the prepared Cs 3 Cu 2 I 5 @PMMA scintillator films have high crystallinity, uniform size, excellent flexibility, high stable photoluminescence (PL) and radioluminescence (RL) performance, and high-resolution X-ray imaging capability. Most importantly, Cs 3 Cu 2 I 5 @PMMA scintillator films can not only provide clear and accurate imaging recognition of objects with different complex structures but also maintain stable X-ray imaging quality within 60 days and can achieve flexible X-ray imaging. Therefore, we have provided an effective strategy for producing high-quality scintillator films to meet the multidimensional needs of a new generation of scintillators.