Energy-Trapping Management in X-Ray Storage Phosphors for Flexible 3D Imaging

Xinquan Zhou; Kai Han; Yexin Wang; Jiance Jin; Shangda Jiang; Qinyuan Zhang; Zhiguo Xia

doi:10.1002/adma.202212022

Energy-Trapping Management in X-Ray Storage Phosphors for Flexible 3D Imaging

Adv Mater. 2023 Apr;35(16):e2212022. doi: 10.1002/adma.202212022. Epub 2023 Mar 9.

Authors

Xinquan Zhou¹, Kai Han¹, Yexin Wang², Jiance Jin¹, Shangda Jiang², Qinyuan Zhang³, Zhiguo Xia^{1

3}

Affiliations

¹ State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, Guangdong Engineering Technology Research and Development Centre of Special Optical Fiber Materials and Devices, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, China.
² Spin-X Institute, School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, South China University of Technology, Guangzhou, 510641, China.
³ School of Physics and Optoelectronics, South China University of Technology, Guangzhou, Guangdong, 510641, China.

PMID: 36807928
DOI: 10.1002/adma.202212022

Abstract

X-ray imaging has received sustained attention for healthcare diagnostics and nondestructive inspection. To develop photonic materials with tunable photophysical properties in principle accelerates radiation detection technologies. Here the rational design and synthesis of doped halide perovskite CsCdCl₃ :Mn²⁺ , R⁴⁺ (R = Ti, Zr, Hf, and Sn) are reported as next generation X-ray storage phosphors, and the capability is greatly improved by trap management via Mn²⁺ site occupation manipulation and heterovalent substitution. Specially, CsCdCl₃ :Mn²⁺ , Zr⁴⁺ displays zero-thermal-quenching (TQ) radioluminescence and anti-TQ X-ray-activated persistent luminescence even up to 448 K, further revealing the charge-carrier compensation and redeployment mechanisms. X-ray imaging with the resolution of 12.5 lp mm^-1 is demonstrated, and convenient 3D X-ray imaging for the curved objects is realized in a time-lapse manner. This work demonstrates efficient modulation of energy traps to achieve high storage capacities and promote future research into flexible X-ray detectors.

Keywords: X-ray imaging; doping; halide perovskites; storage phosphors.

Abstract

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