1. Highly Efficient Stable Luminescent Radical-Based X-ray Scintillator
- Author
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Yuan, Jia-Wang, Peng, Qiu-Chen, Fu, Jia-Cong, Yang, Qi, Gao, Zi-Ying, Wang, Zhao-Yang, Li, Kai, Zang, Shuang-Quan, and Tang, Ben Zhong
- Abstract
Stable luminescent radicals are open-shell emitters with unique doublet emission characteristics. This feature makes stable luminescent radicals exhibit widespread application prospects in constructing optical, electrical, and magnetic materials. In this work, a stable luminescent radical-based X-ray scintillator of AuPP-1.0was prepared, which exhibited a high X-ray excited luminescence (XEL) efficiency as well as excellent stability. A mechanism study showed that the heavy atom of Au in AuPP-1.0endowed it with effective absorption of X-rays, and the doublet emission characteristics of AuPP-1.0significantly increased its exciton utilization rate in the radioluminescence process. Moreover, AuPP-1.0has good processability to fabricate a flexible screen for high-quality X-ray imaging, whose resolution can reach 20 LP mm–1. This work demonstrates that the doublet emission is beneficial for improving the exciton utilization rate of radioluminescence, providing a brand-new strategy for the construction of high-performance X-ray scintillators.
- Published
- 2023
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