NUCLEAR TECHNIQUES, Volume. 45, Issue 12, 120202(2022)
Simulation of X-ray imaging property of halide lead perovskite scintillators
Figures & Tables(9)
Fig. 1. Geant4 model of perovskite quantum dots/polystyrene scintillators
Fig. 2. Attenuation coefficients of different scintillators for 0~120 keV X-ray incident
Fig. 3. Absorption efficiency of different scintillators under 20 keV X-ray incidence.
Fig. 4. The relationship between incident energy and energy deposition efficiency.
Fig. 5. Relationship between energy deposition efficiency and scintillator structure parameters (perovskite quantum dots ratio, thickness)
Fig. 6. The relationship between the spatial resolution and thickness of 80% MAPbBr 3 scintillator (a), the relationship between the spatial resolution and thickness corresponding to the MTF=0.2 of each scintillator (b) , the relationship between the spatial resolution and thickness of 80% MAPbBr 3 scintillator measured experimentally (c), and the relationship between the spatial resolution of 0.1 mm MAPbBr 3 scintillator and the proportion of perovskite QDs (d)
Fig. 7. Spatial resolution of scintillators with different thickness at 20 keV (a) and 50 keV (b) X-ray incidence
Table 1. Parameters of common scintillators
View tableView in ArticleTable 1. Parameters of common scintillators
闪烁体
Scintillator
密度
Density / g·cm-3
组分
Component
光产额
Light yield / photons·MeV-1
发光波长
Peak emission wavelength / nm
CsI 4.51 CsI 66 000 550 GOS 7.3 Gd2O2S 60 000 545 蒽 Anthracene 1.24 C14H10 17 000 447 二维钙钛矿QDs 2D perovskite QDs 2.50 (PEA)2PbBr4 30 000 420 三维钙钛矿QDs 3D perovskite QDs 2.50 MAPbBr3 30 000 520
Table 2. The corresponding scintillator thickness when the absorption efficiency reaches 99.5% under 20 keV X-ray incidence
View tableView in ArticleTable 2. The corresponding scintillator thickness when the absorption efficiency reaches 99.5% under 20 keV X-ray incidence
闪烁体 Scintillator 厚度Thickness /mm 80% MAPbBr3 0.54 80% (PEA)2PbBr4 1.05 100% MAPbBr3 0.35 100% (PEA)2PbBr4 0.48 GOS 0.2 CsI 0.45
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Yuyu ZHANG, Zhi YANG, Liang SHENG, Baojun DUAN, Weipeng YAN, Yan SONG, Minqiang WANG. Simulation of X-ray imaging property of halide lead perovskite scintillators[J]. NUCLEAR TECHNIQUES, 2022, 45(12): 120202
Paper Information
Category: Research Articles
Received: Jul. 10, 2022
Accepted: --
Published Online: Jan. 3, 2023
The Author Email: YANG Zhi (yangzhi029@xjtu.edu.cn)
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