Affiliation:
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
Abstract
AbstractX‐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.
Funder
State Key Laboratory of Luminescent Materials and Devices
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Cited by
84 articles.
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