Journal ArticleDOI
Seed‐Crystal‐Induced Cold Sintering Toward Metal Halide Transparent Ceramic Scintillators
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TLDR
In this paper , a textured metal halide ceramic scintillator with high light-guiding properties with high transparency and large area fabrication by grain orientation engineering is presented.Abstract:
Scintillators with high spatial resolution at a low radiation dose rate are desirable for X‐ray medical imaging. To challenge the state‐of‐art technology, it is necessary to design large‐area wafers with high light yield, oriented light transport, and reduced light scattering. Here, a seed‐crystal‐induced cold sintering is adopted and a <001>‐textured TPP2MnBr4 (TPP: tetraphenylphosphonium) transparent ceramic is fabricated with a large‐area wafer of 5 cm in diameter, exhibiting high optical transparency of above 68% over the 450–600 nm range. The compelling scintillation performance of the TPP2MnBr4 wafer includes a light yield of ≈78 000 ± 2000 photons per MeV, a low detection limit 8.8 nanograys per second, about 625 times lower than the requirement of X‐ray diagnostics (5500 nanograys per second), and an energy resolution of 17% for high‐energy γ‐rays (662 keV). X‐ray imaging demonstrates a high spatial resolution of 15.7 lp mm−1. Moreover, the designed material exhibits good retention of the radioluminescence intensity and light yield. This work presents a paradigm for achieving light‐guiding properties with high transparency and large‐area fabrication by grain orientation engineering, and the transparent, textured metal halide ceramic scintillator is expected to provide a route for advancement in the X‐ray imaging of tomorrow.read more
Citations
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Journal ArticleDOI
Thermally Activated Delayed Fluorescence Zirconium‐Based Perovskites for Large‐Area and Ultraflexible X‐ray Scintillator Screens
Fei Zhang,Yingchun Zhou,Zhongyong Chen,Meng Wang,Zhuangzhuang Ma,Xu Chen,Mochen Jia,Di Wu,Jia-Wen Xiao,Xinjian Li,Yu Zhang,Zhifeng Shi,Chongxin Shan +12 more
TL;DR: In this article , a large-scale and cost-efficient solution synthesis of the vacancy-ordered double perovskite Cs2ZrCl6, which is characterized by thermal activation delayed fluorescence (TADF) dominated by triplet emission under X-ray irradiation, is demonstrated.
Journal ArticleDOI
Heavy-atom engineering of thermally activated delayed fluorophores for high-performance X-ray imaging scintillators
Jian Xin Wang,Luis Gutiérrez-Arzaluz,Xiaojia Wang,Tengyue He,Yuhai Zhang,Mohamed Eddaoudi,Osman M. Bakr,Omar F. Mohammed +7 more
TL;DR: In this article , heavy atoms (Cl, Br and I) were introduced into thermally activated delayed fluorescence (TADF) chromophores to significantly increase their X-ray absorption cross-section and maintaining their unique TADF properties and high photoluminescence quantum yield.
Journal ArticleDOI
Multispectral Large‐Panel X‐ray Imaging Enabled by Stacked Metal Halide Scintillators
TL;DR: In this paper , a multilayer stacked scintillators of different X-ray absorption capabilities and scintillation spectra are designed; in this scenario, the X•ray energy can be discriminated by detecting the emission spectra of each Scintillator.
Journal ArticleDOI
Ceramic Wafer Scintillation Screen by Utilizing Near‐Unity Blue‐Emitting Lead‐Free Metal Halide (C8H20N)2Cu2Br4
TL;DR: In this article , a lead-free metal halide scintillator with high light yield, low detection limit, large X-ray attenuation efficiency as well as stable and nontoxic compositions are of great importance for radiation detection applications.
Journal ArticleDOI
Sequential and Reversible Phase Transformations in Zero-Dimensional Organic-Inorganic Hybrid Sb-based Halides towards Multiple Emissions.
TL;DR: In this paper , two 0D organic-inorganic hybrid Sb-based halides, (MTP)2SbBr6Sb2Br9·H2O (mTP = Methyltriphenylphosphonium, crystal 1), featuring a reversible structural phase transformation and tunable orange and red emissions upon dehydration and rehydration of H2O molecules, were reported.
References
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Journal ArticleDOI
Transparent Alumina: A Light-Scattering Model
TL;DR: In this article, a model based on Rayleigh-Gans-Debye light scattering theory has been developed to describe the light transmission properties of fine-grained, fully dense polycrystalline ceramics consisting of birefringent crystals.
Journal ArticleDOI
Monolithic integration of hybrid perovskite single crystals with heterogenous substrate for highly sensitive X-ray imaging
Wei Wei,Yang Zhang,Qiang Xu,Haotong Wei,Yanjun Fang,Qi Wang,Yehao Deng,Tao Li,Alexei Gruverman,Lei Cao,Jinsong Huang +10 more
TL;DR: In this paper, hybrid perovskite crystals are integrated onto silicon wafers enabling fabrication of an X-ray linear detector array, which may reduce patient dose in medical imaging applications.
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Ultrahigh Piezoelectric Properties in Textured (K,Na)NbO3-Based Lead-Free Ceramics
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