Hydrogen-Rich 2D Halide Perovskite Scintillators for Fast Neutron Radiography

Jinxiao Zheng; Yan Zeng; Jingjing Wang; Chenghua Sun; Bin Tang; Yang Wu; Yuan Zhang; Yuanping Yi; Nü Wang; Yong Zhao; Shuyun Zhou

doi:10.1021/jacs.1c08923

Hydrogen-Rich 2D Halide Perovskite Scintillators for Fast Neutron Radiography

J Am Chem Soc. 2021 Dec 22;143(50):21302-21311. doi: 10.1021/jacs.1c08923. Epub 2021 Dec 9.

Authors

Jinxiao Zheng^{1

2}, Yan Zeng^{2

3}, Jingjing Wang¹, Chenghua Sun¹, Bin Tang⁴, Yang Wu⁴, Yuan Zhang⁵, Yuanping Yi³, Nü Wang⁵, Yong Zhao⁵, Shuyun Zhou¹

Affiliations

¹ Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
² University of Chinese Academy of Sciences, Beijing 100049, China.
³ Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
⁴ Key Laboratory of Neutron Physics, China Academy of Engineering Physics, Mianyang 621900, China.
⁵ Laboratory of Bioinspired Smart Interfacial Science and Technology of the Ministry of Education, Beijing Key Laboratory of Bioinspired Energy Materials and Devices, School of Chemistry, Beihang University, Beijing Advanced Innovation Center for Biomedical Engineering, Beijing 100191, China.

PMID: 34882410
DOI: 10.1021/jacs.1c08923

Abstract

A fast neutron has strong penetration ability through dense and bulky objects, which makes it an ideal nondestructive technology for detecting voids, cracks, or other defects inside large equipment. However, the lack of effective fast neutron detection materials limits its application. Perovskites have shown excellent optical properties in many areas, but they are absent from fast neutron detection imaging because they cannot directly absorb fast neutrons and emit luminescence. Here, we demonstrate a hydrogen-rich long-chain organic amine modified two-dimensional (2D) perovskite fast neutron scintillator, Mn-(C₁₈H₃₇NH₃)₂PbBr₄(Mn-STA₂PbBr₄). Its hydrogen density can reach 9.51 × 10²⁸ m^-3, and the photoluminescence quantum yield can reach 58.58%, so it is possible to integrate fast neutron absorption and luminescence into a single compound. More importantly, Mn-STA₂PbBr₄ can be made into a large-area self-supporting fast neutron scintillator plate with satisfactory spatial resolution (0.5 lp/mm (lp: line pairs)). This strategy provides a simple and promising choice for fast neutron scintillator nondestructive testing.