Laser & Photonics Reviews
·
2022
·Vol. 16
·期 7
·2100736
·
IF 10.947
Baiqian Wang,Jiali Peng,Xin Yang,Wensi Cai,Hongbin Xiao,Shuangyi Zhao,Qianqian Lin,Zhigang Zang
Metal halide perovskite-based high-performance X-ray scintillator is considered as one of the most favorable candidates applied in the fields of medicine, industry, and science. However, the current X-ray scilltillators based on perovskites still suffer from the issue of poor stability, which impedes their further wide applications. Herein, a template assembled method to prepare large-size, flexible, and stable CsPbBr 3 @Polymethyl methacrylate composite films in ambient conditions is developed and their detection performance is studied. The composite films can maintain 94% and 81% of the initial PL intensity after 2000 cycles bending and storing in water over 2520 h, respectively. In addition, the prepared scintillators exhibit not only a low detection limit of 40.1 nGy air s −1 and a high spatial resolution of 8.0 lp mm −1 , but also an excellent tolerance against radiation (108 h). Thus, this simple but yet effective method would not doubt pave the way for further development of scintillators and might be well applicable to other metal halides.
研究领域:
材料科学
·
医学影像
·
辐射探测
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2019
·Vol. 31
·期 44
·1904711
·
IF 25.809
Bo Yang,Lixiao Yin,Guangda Niu,Jun-Hui Yuan,Kan-Hao Xue,Zhifang Tan,Xiang-Shui Miao,Ming Niu,Xinyuan Du,Haisheng Song,Efrat Lifshitz,Jiang Tang
Scintillators are widely utilized for radiation detections in many fields, such as nondestructive inspection, medical imaging, and space exploration. Lead halide perovskite scintillators have recently received extensive research attention owing to their tunable emission wavelength, low detection limit, and ease of fabrication. However, the low light yields toward X-ray irradiation and the lead toxicity of these perovskites severely restricts their practical application. A novel lead-free halide is presented, namely Rb 2 CuBr 3 , as a scintillator with exceptionally high light yield. Rb 2 CuBr 3 exhibits a 1D crystal structure and enjoys strong carrier confinement and near-unity photoluminescence quantum yield (98.6%) in violet emission. The high photoluminescence quantum yield combined with negligible self-absorption from self-trapped exciton emission and strong X-ray absorption capability enables a record high light yield of ≈91056 photons per MeV among perovskite and relative scintillators. Overall, Rb 2 CuBr 3 provides nontoxicity, high radioluminescence intensity, and good stability, thus laying good foundations for potential application in low-dose radiography.
研究领域:
材料科学
·
辐射探测技术
✓ 已验证
DOI
高影响因子
ACS Omega
·
2024
·
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
·
放射医学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Photonics Research
·
2021
·Vol. 2
·期 9
·2100066
·
IF 0
Jia-Li Yao,Zi-Xu Zhang,Xiao-Qi Sun,Tong Chang,Jing-Fu Guo,Ke-Ke Huang,Hai-Bo Zeng,Da-Yang Wang,Wen-Sheng Yang,Ruo-Sheng Zeng,Xiao-Ming Li,Ren-Guo Xie
Radioluminescence materials (scintillators) are widely investigated because of their potential application in many fields, such as medical imaging, security-related techniques, and nondestructive inspection. However, the fabrication of scintillator materials with simultaneously fast response time, high absorption coefficient, and high light yield, as well as low toxicity is still a challenge. Herein, the synthesis of Cu(I)-doped Cs 2 AgI 3 single crystals (SCs) with a 1D crystal structure is presented. A bright blue-green photoluminescence (PL) is observed after incorporating Cu + into the Cs 2 AgI 3 SCs under UV irradiation at room temperature. The PL quantum yield of the doped samples can reach up to 73% at a Cu + concentration of 0.66%. Experimental and theoretical studies show that the blue-green emission may originate from self-trapped excitons, which is further verified by photophysical results from control experiments on pure Cs 2 AgI 3 SCs. Upon X-ray excitation, Cu-doped SCs exhibit fast scintillation decay time (288 ns), high light yield (27 000 photons per MeV), and high absorption coefficient compared with the commercial product (CsI: Tl). These results suggest that Cu-doped Cs 2 AgI 3 is an ideal scintillator, which will be a promising candidate for potential application in dynamic real-time imaging and radiation detection.
研究领域:
材料科学
·
医学成像
·
辐射检测
✓ 已验证
产品关联
DOI
Inorganic Chemistry Frontiers
·
2024
·
IF 6.1
Qingzheng Kong,Xiaomei Jiang,Ying Sun,Jianguo Zhu,Xutang Tao
Recently, low-dimensional copper(I)-based halide has been considered as a potential substitute for its lead-based counterpart due to its environmental friendliness, facile preparation and superior luminescence performance. In particular, as a representative efficient luminescent material, it shows great potential as a scintillator for X-ray detection. Herein, three organic copper(I) halide single crystals were grown by incorporating a conjugated organic cation (4-benzylpyridine, 4-bzpy) with copper(I) iodide modules. The three compounds exhibit distinct crystal structure and properties. Notably, the zero-dimensional cubane-like (4-bzpy)4Cu4I4 shows a broadband emission with near-unity photoluminescence quantum yield (∼99.7%) and a large Stokes shift (∼216 nm). More importantly, it demonstrates an obvious X-ray response with a high light yield (∼60 948 photons per MeV) and a perfect linear relationship with the dose rate under X-ray irradiation. The highly efficient emission of (4-bzpy)4Cu4I4 clusters mainly originates from the ligand-to-core charge transfer state. This work not only provides further understanding of the importance of crystal structure in the properties of organic copper(I) halides, but also facilitates the design and fabrication of high-performance X-ray scintillators.
研究领域:
材料科学
·
光学
·
放射学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 9
·3221-3227
·
IF 5.7
Yuying Liu,Kai Han,Shihao Zhao,Xinquan Zhou,Song Gao,Yexin Wang,Zhiguo Xia,Shangda Jiang
Rare-earth Ce3+-doped scintillators are attracting considerable attention for X-ray detection. However, large-area and fast scintillation screens using monodispersed scintillator nanocrystals (NCs) remain a challenge in X-ray imaging. Herein, we fabricated Ce3+-doped alkaline-earth metal sulfide NCs by a high-temperature co-precipitation method. The as-prepared SrS:Ce3+ and CaS:Ce3+ NCs show a bright blue-green emission originating from the d–f transition of Ce3+, and the NCs exhibit good X-ray scintillation performance with a detection limit as low as 0.66 μGyair s−1 and excellent anti-irradiation stability. We further successfully fabricated a homogeneous hybrid scintillation film by embedding scintillator NCs in poly(methyl methacrylate) (PMMA) and demonstrated the imaging effect of the film as an X-ray screen. This work highlights the potential of Ce3+-doped scintillator NCs for efficient X-ray detection.
研究领域:
材料科学
·
医学影像学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2024
·
IF 3.3
Heng Guo
Low-dimensional metal halides, which possess efficient luminescent properties, have garnered significant interest in the fields of optoelectronics and radiation detection. This study introduces novel lead-free silver-based metal halide material, CsAgCl 2 microcrystals (MCs). These MCs have a one-dimensional atomic chain structure and a unique [AgCl 5 ] 4- tetragonal shared triangular configuration. CsAgCl 2 MCs exhibit excellent performance as X-ray scintillators due to their bright broadband yellow emission and fast decay time in the microsecond range. The large Stokes shift of 350 nm is produced by self-trapped exciton emission. In X-ray scintillation applications, CsAgCl 2 MCs demonstrate a high light yield of 13280 photons/MeV and a wide range of linear scintillation response. It is noteworthy that the CsAgCl 2 MCs maintain good stability under both atmospheric conditions and continuous X-ray irradiation. The sample was used in an X-ray imaging screen, which clearly presented the X-ray projection image of a wooden stick. As a result, this research not only contributes to the collection of lead-free metal halide scintillators but also indicates that CsAgCl 2 MCs have a wide range of future applications and potential in areas such as medical imaging, scientific research, and diagnostic and detection technologies.
研究领域:
材料科学
·
辐射检测
·
医学影像
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2022
·Vol. 34
·期 43
·2204801
·
IF 32.086
Fei Zhang,Yingchun Zhou,Zhipeng Chen,Meng Wang,Zhuangzhuang Ma,Xu Chen,Mochen Jia,Di Wu,Jiawen Xiao,Xinjian Li,Yu Zhang,Zhifeng Shi,Chongxin Shan
Flexible scintillator screens with environmental stability, high sensitivity, and low cost have emerged as candidates for X-ray imaging applications. Here, a large-scale and cost-efficient solution synthesis of the vacancy-ordered double perovskite Cs 2 ZrCl 6 , which is characterized by thermal activation delayed fluorescence (TADF) dominated by triplet emission under X-ray irradiation, is demonstrated. The large Stokes shift and efficient luminescence collection of TADF effectively ensure the light outcoupling efficiency. Further, flexible X-ray scintillator screens with an area of 400 cm 2 are prepared using poly(dimethylsiloxane) (PDMS) as the carrier, exhibiting excellent scintillation properties with light yields as high as 49 400 photons MeV −1 , spatial resolutions up to 18 lp mm −1 and detection limits as low as 65 nGy s −1 . Finally, the high-quality imaging results of non-planar and dynamic objects by such screens are demonstrated. It is believed that the explored Cs 2 ZrCl 6 @PDMS flexible scintillator screens would offer a big step toward expanding the application range of scintillators in different environments.
研究领域:
材料科学
·
医学成像
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yunfei Bai,Panwang Zhou,Xinyu Yang,Hongyuan Zhao,Ziying Wen,Qichao Meng,Haibo Sun,Chao Li,William W. Yu,Feng Liu
In addition to the easy oxidation of tin(II) (Sn2+), the poor repeatability in synthesizing luminescent Sn2+-based halide perovskites can be attributed to the structural diversity among Sn compositions, with many structures failing to exhibit luminescence. Furthermore, compared to luminescent compounds, there is insufficient attention on the photophysical properties of these nonluminescent compositions, which impedes a deeper understanding of the relationship between their structures and optical properties. In this work, we report two Sn2+-based halide compounds, (DFPD)6SnBr8 and (DFPD)2SnBr4 (DFPD+ = 4,4-difluoropiperidinium). Both exhibit excellent air stability, with the former demonstrating a high luminescence efficiency of ∼92%, while the latter is essentially nonluminescent. Theoretical calculations suggest that the nonluminescence of (DFPD)2SnBr4 arises from charge transfer between two adjacent [SnBr4]2– units in the first excited state. In contrast, significant structural distortion and localization of excitons in (DFPD)6SnBr8 indicate that its emission originates from self-trapped excitons. As a demonstration, we prepared an X-ray scintillator based on (DFPD)6SnBr8 with a high light yield up to 27,600 ph/MeV and a low detection limit of 84.7 nGy/s, which is significantly better than the commercial LuAG/Ce scintillator (22,000 ph/MeV, 2.32 μGy/s).
研究领域:
材料科学
·
光学
·
理论计算
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Horizons
·
2023
·Vol. 10
·期 11
·5004-5015
·
IF 13.3
Dong-Yang Li,Yan-Bing Shang,Qi Liu,Hua-Wu Zhang,Xin-Yue Zhang,Cheng-Yang Yue,Xiao-Wu Lei
Halide perovskite nanocrystal (PNC) of 3D CsPbX3 as a scintillator has aroused intensive attention with advanced applications in radiation detection and X-ray imaging. However, the low light yield and serious toxicity of Pb2+ severely hinder advanced optoelectronic applications. To reduce these fatal shortcomings, a family of new environmentally friendly 0D hybrid lead-free indium halides of [DADPA]InX6·H2O (DADPA = 3,3′-diaminodipropylamine; X = Cl and Br) was prepared. Upon UV excitation, these halides display strong broadband yellow-orange light emissions, and the photoluminescence quantum yield (PLQY) can be optimized up to near unity through the Sb3+-doping strategy. Significantly, high PLQY, negligible self-absorption and low attenuation ability toward X-ray render extraordinary scintillation performance with a high light yield of 51 875 photons MeV−1 and ultralow detection limit of 98.3 nGyair s−1, which is far superior to typical 3D PNC scintillators. Additionally, the ultra-high spatial resolution of 25.15 lp mm−1, negligible afterglow time (2.75 ms) and robust radiant stability demonstrates excellent X-ray imaging performance. To the best of our knowledge, this is the first report on X-ray scintillation based on 0D indium halide materials.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Yu-Yin Wang,Ying Feng,Xiao-Tong Liu,Lin-Ying Cao,Qing-Ying Xu,Hao Qu,Tong Zhao,Yunyun Li,Guoming Lin
In recent years, low-dimensional organic–inorganic hybrid metal halides have garnered significant attention for optoelectronic applications due to their exceptional photophysical properties, despite their persistent challenge of low stability. Addressing this challenge, our study introduces 1-[5-(trifluoromethyl)pyridin-2-yl]piperazinium (TFPP) as a cation, harvesting a novel one-dimensional hybrid cadmium-based halide semiconductor (TFPP)CdCl4, which exhibits intense blue-light emission upon UV excitation. Additionally, (TFPP)CdCl4 demonstrates a high scintillation performance under X-ray excitation, producing 16600 ± 500 photons MeV–1 and achieving a low detection limit of 0.891 μGyair s–1. Notably, (TFPP)CdCl4 showcases remarkable stability against water, intense light sources, heating, and corrosive environments, positioning it as a promising candidate for optoelectronic applications. Through a blend of experimental techniques and theoretical analyses, including density functional theory calculations, we elucidate the unique photophysical properties and structural stability of (TFPP)CdCl4. These findings significantly contribute to the understanding of low-dimensional hybrid halide semiconductors, offering valuable insights into their potential application in advanced optoelectronic devices and paving the way for further research in this field.
研究领域:
材料科学
·
光学
·
半导体物理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Electronic Materials
·
2020
·
IF 0
Wanru Gao,Guangda Niu,Lixiao Yin,Bo Yang,Jun-Hui Yuan,Dongdong Zhang,Kan-Hao Xue,Xiangshui Miao,Qingsong Hu,Xinyuan Du,Jiang Tang
Lead halide perovskites have shown great X-ray scintillation properties. One big challenge is to find nontoxic replacements for practical applications. Moreover, the scintillator should contain less intrinsic radioactivity as possible to suppress the constant background signal. Here, we report K2CuBr3 with ultralow intrinsic radioactivity. The abundance of radioactive isotope 40K is 0.0118%, while Cu and Br do not contain stable radioactive isotopes. Thanks to the one-dimensional crystal structure and strong electron–phonon coupling, K2CuBr3 exhibits strong carrier confinement and high photoluminescence quantum yield (86.98%) for the violet emission (peak, 391 nm). Such a high PLQY value is among the highest for all kinds of violet emitters. For X-ray scintillation applications, we evaluate the light yield to be 23,806 photons per MeV, and the detection limit is 132.8 nGyair s–1.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
危险品化学品经营许可证（带存储）