journal article·2023-01-13

Airflow-Controlled Crystallization for a Multi-Inch 2D Halide Perovskite Single-Crystal Scintillator for Fast High-Resolution X-ray Imaging

Binxia Jia, Depeng Chu, Nan Li, Yunxia Zhang, Zhou Yang, Yingjie Hu, Zeqin Zhao, Jiangshan Feng, Xiaodong Ren, Hao Zhang, Guangtao Zhao, Huaming Sun, Ningyi Yuan, Jianning Ding, Yucheng Liu, Shengzhong Frank Liu

ACS Energy Letters· Volume 8· Issue 1
Publisher page

Abstract

Theoretical analyses indicate that a two-dimensional (2D) layered metal halide perovskite, with its unique quantum-well structure and large exciton binding energy, should render both fast and strong fluorescence, making it ideal for fast X-ray imaging. Herein, an airflow-controlled solvent evaporation system is designed to grow an inch-sized 2D (PEA)2PbBr4 single crystal (SC) at low temperature (30 °C). Under X-rays, the (PEA)2PbBr4 SC exhibits a high light yield of 73226 photons/MeV and a fast response time of 14 ns, which is approximately 1.4 times higher and 75 times faster than those of the commercial CsI:Tl scintillator (54000 photons/MeV and 1049 ns), respectively. With such significant merits, an X-ray imager is assembled by integrating a (PEA)2PbBr4 SC with dimensions of 57 × 41 mm2 for X-ray imaging, and a high spatial resolution of 11.1 lp/mm is achieved, which demonstrates the application prospect of the large-size (PEA)2PbBr4 SC in high-speed nondestructive medical diagnosis.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Radiation Detection and Scintillator Technologies · Atomic and Subatomic Physics Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710119, People’s Republic of China

School of Science, Xi’an University of Posts & Telecommunications, Xi’an 710121, People’s Republic of China

School of Materials Science and Engineering Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology Changzhou University Changzhou 213164, People’s Republic of China

State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China

Funding

National University Research Fund of China · Ministry of Education of the People's Republic of China · China Postdoctoral Science Foundation · Young Talent Support Program of Shaanxi Province University · Education Department of Shaanxi Province · Ministry of Human Resources and Social Security · National Natural Science Foundation of China · Shaanxi Normal University · Higher Education Discipline Innovation Project · Chinese Academy of Sciences

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