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Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation
Published on: October 1, 2019
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Lead halide perovskite quantum dots based liquid scintillator for x-ray detection
Qiang Xu1, Jie Huang1, Jun Liu2,3
1Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, People's Republic of China.
Nanotechnology
|February 9, 2021
Summary
Researchers explored lead halide perovskite quantum dots (QDs) for radiation detection. These QDs show excellent scintillation performance, making them ideal for gamma-ray counters and dosimeters.
Area of Science:
- Materials Science
- Nanotechnology
- Radiological Physics
Background:
- Lead halide quantum dots (QDs) possess unique optical properties like tunable wavelengths and high quantum efficiency, finding applications in optoelectronics and photodetectors.
- Solution-processed perovskites have recently gained attention for their potential in high-sensitivity X-ray detection.
Purpose of the Study:
- To investigate the scintillation performance of lead halide perovskite quantum dots (QDs) in a liquid scintillator solution.
- To evaluate the suitability of these perovskite QDs for radiation detection applications.
Main Methods:
- Preparation of lead halide perovskite quantum dot solutions, specifically CH3NH3PbBr3 and CsPbBr3.
- Characterization of the scintillation properties of the liquid solutions under varying irradiation dose rates.
Main Results:
- Both CH3NH3PbBr3 and CsPbBr3 liquid perovskite QD scintillators demonstrated a linear relationship with irradiation dose rate over a wide range.
- The liquid scintillators exhibited high radiation hardness, excellent thermal stability, and fast counting speeds.
Conclusions:
- Liquid perovskite QD scintillators show promising potential for indirect radiation applications.
- These materials are suitable for developing fast gamma-ray counters and wide-range dosimeters.
