ACS Omega
·
2024
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IF 3.7
Jiali Yao,Dan Huang,Xudong Hu,Haiming Cheng,Dayang Wang,Xiaoming Li,Wensheng Yang,Renguo Xie
Scintillators have garnered heightened attention for their diverse applications in medical imaging and security inspection. Nonetheless, commercial scintillators encounter challenges with costly rare-earth metals and toxic elements like thallium (Tl), driving the need for sustainable, cost-effective, and eco-friendly alternatives to meet contemporary X-ray detection demands. This study focuses on exploring the potential of Cu+-doped Rb2AgI3 as an effective metal halide (MH) scintillator. One-dimensional (1D) Rb2AgI3 and Cu+-doped Rb2AgI3 single crystals (SCs) were synthesized by using the conventional temperature-lowering crystallization method. When excited by UV light, Cu+-doped SCs emitted a broad sky-blue light at 490 nm with a high photoluminescence (PL) quantum yield (PLQY) of 76.48%. Remarkably, under X-ray excitation, these Cu+-doped SCs demonstrated an outstanding light yield of 36,293 photons MeV–1, a relatively low detection threshold of 1.022 μGyair s–1, and a rapid scintillation decay time of 465 ns. The prepared translucent scintillation film has good uniformity and flexibility, with a high spatial resolution of 10.2 lp mm–1. These results position Cu+-doped Rb2AgI3 as a leading candidate among promising X-ray scintillators, offering superior scintillation light yield, excellent stability, and nontoxicity.
研究领域:
材料科学
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放射医学
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光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Laser & Photonics Reviews
·
2025
·
IF 10
Yuexin Zhu,Peng Ran,Chunshen Li,Chao Wang,Jinlong Zhu,Jiawen Xiao,Yang (Michael) Yang,Peng Zhang
High-performance X-ray scintillation detectors are crucial for X-ray imaging applications, relying on scintillators with high light-yield (LY). In contrast to conventional scintillators with large bandgaps ( E g ), halide perovskite materials with low E g exhibit high LY, emerging as next-generation scintillation materials. Additionally, doping with rare-earth ions extends the emission wavelength to the near-infrared (NIR) region, effectively suppressing light self-absorption of perovskite materials. Here, we fabricated a Ytterbium-ion (Yb 3+ ) doped CsPbCl 3 : 2%Yb 3+ single crystal (SC) with a large-size of Φ30 × 40 mm via the Bridgman method, which exhibits a low E g of 2.88 eV and efficient NIR luminescence centered at 985 nm, achieves a high steady state LY of 83 703 photons MeV −1 , and a large effective “Stokes shift” of 563 nm. Furthermore, we prepare a series of flexible scintillation films by embedding CsPbCl 3 : 2%Yb 3+ powder in polydimethylsiloxane (PDMS). Owing to the efficient NIR luminescence, these films enable clear X-ray imaging even under bright white-LED interference, demonstrating a low X-ray detection limit of 17.8 nGy air s −1 and a high spatial resolution of 10 lp mm −1 . This work provides a high-LY NIR scintillator for X-ray flexible imaging, paving the way for low dose-rate X-ray imaging for portable and fast radiography.
研究领域:
生物医学工程
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医学影像学
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材料科学
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辐射探测
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纳米医学
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转化医学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Dong Yang,Kun Ge,Huiyun Ban,Huiping Yuan,Sen Qian,Zhehao Hua,Hua Cai,Danping Chen,Jifeng Han,Xvsheng Qiao,Jing Ren,Xinyuan Sun,Gao Tang,Shenghua Yin,Minghui Zhang,Jiawen Xiao
A series of Ce 3+ -doped Gd 2 O 3 -GdF 3 -Al 2 O 3 -B 2 O 3 -SiO 2 glass scintillators (GSC x and GLC x ) were successfully synthesized in reducing atmosphere for future imaging application. The transmittance of GSC x glasses exceeds 85 % in range of 500–800 nm, and the cut-off edge red shifts as the Ce 3+ concentration increases. In photoluminescence (PL), GSC x glass scintillators have a 360–600 nm broadband emission with a shoulder peak at around 450 nm. Meanwhile, the PL lifetime of GSC x glasses is close to the CeF 3 crystals, and the PL QY of GSC 3 glass scintillator reaches up 70.2 %. For scintillation application, the integral XEL intensity of GSC 2 and GSC 3 glasses is 31.3 % and 24.4 % of that of BGO crystal. GLC 2 and GLC 3 glasses exhibit similar spatial resolution of approximately 7 lp·mm −1 . Moreover, the light yields of GSC 2 and GSC 3 glass scintillator are 1702 and 1690 ph/MeV excited by γ-ray, respectively. The nonproportionality of GSC x glasses is less than 3 % in the range of 100–1400 keV due to the large density and Z eff . As Ce 3+ concentration increases, both the fast and slow components of the glasses decrease (103.7 ns–89.7 ns, 1454.4 ns–1012.8 ns), and the proportion of fast component also increased from 3.3 % to 4.7 %. For γ-ray imaging, the scintillation light events of the glass can be observed from SiPM array, and the central position (−2, −1) have the highest count rate of the system. The results show that GSCx and GLCx glass scintillators deserve further development for future applications.
研究领域:
材料科学
·
核医学
·
生物医学工程
·
辐射探测
·
光学材料
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）