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Highly Stable X-ray imaging Enabled by rare earth based double perovskite scintillators
Jinlong Zhu1, Lulu Han2, Chao Wang1
1Beijing Key Lab of Microstructure and Property of Advanced Materials, Institute of Matter Science, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124 China.
Journal of Colloid and Interface Science
|February 15, 2025
Summary
A novel double perovskite scintillator, Cs2Na(Er0.4Yb0.6)Cl6, offers stable high-temperature detection. This material exhibits excellent light yield and imaging performance, overcoming limitations of traditional detectors.
Area of Science:
- Materials Science
- Nuclear Instrumentation
- Solid-State Physics
Background:
- High-temperature scintillator detectors are crucial for applications like petroleum and space exploration.
- Existing detectors, such as those based on Sodium Iodide doped with Thallium (NaI(Tl)), suffer from poor humidity stability and complex processing.
- There is a significant need for advanced scintillator materials that can operate reliably under extreme temperature conditions.
Purpose of the Study:
- To introduce Cs2Na(Er0.4Yb0.6)Cl6 double perovskite as a high-temperature resistant scintillator material.
- To evaluate the thermal quenching resistance and performance of this novel double perovskite scintillator.
- To develop a flexible scintillator film for high-temperature imaging applications.
Main Methods:
- Synthesis and characterization of Cs2Na(Er0.4Yb0.6)Cl6 double perovskite.
- Measurement of light yield and thermal quenching properties up to 500 K.
- Fabrication of a flexible scintillator film by mixing the perovskite with polydimethylsiloxane (PDMS).
- Evaluation of imaging performance of the flexible film at room and high temperatures.
Main Results:
- The Cs2Na(Er0.4Yb0.6)Cl6 double perovskite demonstrated resistance to thermal quenching from room temperature to 500 K.
- A significant light yield of 20,000 photons/MeV was recorded at 500 K, attributed to cross-relaxation between Yb and Er ions.
- A flexible film with a resolution of 12 lp/mm was successfully produced.
- The flexible film exhibited superior imaging performance at high temperatures compared to room temperature.
Conclusions:
- Cs2Na(Er0.4Yb0.6)Cl6 double perovskite is a promising material for high-temperature scintillator applications.
- The developed flexible scintillator film shows potential for high-temperature imaging, surpassing conventional detectors.
- The findings provide valuable insights for designing novel, thermally stable scintillators.
