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Color-Tunable and Stable Copper Iodide Cluster Scintillators for Efficient X-Ray Imaging
Wenjing Zhao1, Yanze Wang1, Yuanyuan Guo1
1Frontiers Science Center for Flexible Electronics (FSCFE), MIIT Key Laboratory of Flexible Electronics (KLOFE), Shaanxi Key Laboratory of Flexible Electronics, Xi'an Key Laboratory of Flexible Electronics, Xi'an Key Laboratory of Biomedical Materials & Engineering, Xi'an Institute of Flexible Electronics, Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, Xi'an, 710072, China.
New copper iodide cluster scintillators offer tunable color and robust performance for X-ray radiography. Their high efficiency and low-dose detection capabilities advance medical imaging technology.
Area of Science:
- Materials Science
- Solid-State Physics
- Radiological Imaging
Background:
- Development of efficient and robust scintillators is crucial for advanced X-ray radiography.
- Existing scintillators often face limitations in color tunability, efficiency, or environmental stability.
Purpose of the Study:
- To report on radioluminescence tuning of copper iodide cluster scintillators across the visible spectrum via bandgap engineering.
- To investigate the potential of these materials for low-dose X-ray applications.
Main Methods:
- Bandgap engineering of copper iodide cluster crystals by manipulating inorganic core and organic ligand components.
- Characterization of scintillation performance, moisture resistance, and X-ray irradiation stability.
Main Results:
- Achieved color tunability of radioluminescence across the entire visible region.
- Demonstrated high scintillation performance with a low detection limit of 55 nGy s⁻¹.
- Exhibited remarkable resistance to moisture and X-ray irradiation.
Conclusions:
- Copper iodide cluster scintillators offer a promising platform for next-generation high-performance materials.
- Bandgap engineering provides a pathway to tune optical properties and enhance stability.
- These materials are particularly attractive for low-dose X-ray radiography, significantly reducing radiation exposure.
