Chiral Terbium Halide for Narrow-Band X-ray Scintillation

作者：Xinyi Niu, Haolin Lu, Bo Zhang, Tianyin Shao, Yunxin Zhang, Hebin Wang, Zhaoyu Wang, Tianjiao Qiao, Wenkai Zhao, Bing Sun, Yuerong Xie, Ze Chang, Shen Lai, Hao‐Li Zhang, Guankui Long · 发表于：Nano Letters · 年份：2025 · DOI：10.1021/acs.nanolett.5c03789 · 被引用次数：17 · 研究领域：Atomic and Subatomic Physics Research、Radiation Detection and Scintillator Technologies、Advanced NMR Techniques and Applications

Achieving narrow-band radioluminescence remains challenging despite its critical importance in display technologies. Here, we construct the novel chiral terbium(III)-based hybrid metal halides ( R / S -3BrMBA) 3 TbCl 6 ( R / S -BMTC ) and systematically investigate their scintillation properties. Benefiting from the heavy atom-enhanced X-ray absorption, negligible self-absorption, and unique 4 f -4 f transitions of Tb 3+, R -BMTC exhibits excellent X-ray scintillation activity with strong radioluminescence comparable to that of the commercial Bi 4 Ge 3 O 12 . Most importantly, R -BMTC exhibits one of the narrowest radioluminescences (∼9 nm) among the reported hybrid metal halides. Additionally, it also exhibit efficient green circularly polarized luminescence with high quantum yield (45.9%) and dissymmetry factor (4.99 × 10 –3 ), which are essential for suppressing the optical crosstalk and enhancing the X-ray imaging quality at the boundary. Overall, our work demonstrates an efficient approach for developing the narrow-band X-ray scintillator, thereby advancing the progress of chiral rare-earth halides toward optoelectronic applications.