Affiliation:
1. The 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 Center of Special Optical Fiber Materials and Devices School of Materials Science and Engineering South China University of Technology Guangzhou 510641 China
2. School of Physics and Optoelectronics South China University of Technology Guangzhou 510641 China
Abstract
AbstractMetal halide scintillators have drawn great interest for X‐ray imaging; however, it remains challenging to simultaneously achieve a high light yield (LY) and highly sensitive detection. Herein, Zn2+ is successfully introduced into [TPPen]2MnBr4 (TPPMB, TPPen = pentyltriphenylphosphonium) and the synthesis of [TPPen]2Mn0.9Zn0.1Br4 (TPPMZB) is designed. The LY increases from 43 000 for TPPMB to 68 000 photons MeV−1 for TPPMZB in virtue of the Zn atom doping. Additionally, the detection limit of TPPMZB is 204.1 nGy s−1, showing great improvement to that of TPPMB with the value of 696.9 nGy s−1. X‐ray imaging is realized by utilizing the large‐scale scintillator film fabricated by mixing polydimethylsiloxane with TPPMZB or TPPMB, and the spatial resolution is enlarged from 4.6 to 11.2 lp mm−1 after Zn2+‐doping. This study provides a design principle by doping engineering for enhancing the LY property of metal halide X‐ray scintillators.
Funder
National Natural Science Foundation of China
State Key Laboratory of Luminescent Materials and Devices
Subject
Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
28 articles.
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