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    Organic phosphors with bright triplet excitons for efficient X-ray-excited luminescence

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    Type
    Article
    Authors
    Wang, Xiao
    Shi, Huifang
    Ma, Huili
    Ye, Wenpeng
    Song, Lulu
    Zan, Jie
    Yao, Xiaokang
    Ou, Xiangyu
    Yang, Guohui
    Zhao, Zhu
    Singh, Manjeet
    Lin, Chongyang
    Wang, He
    Jia, Wenyong
    Wang, Qian
    Zhi, Jiahuan
    Dong, Chaomin
    Jiang, Xueyan
    Tang, Yongan
    Xie, Xiaoji
    Yang, Yang (Michael)
    Wang, Jianpu
    Chen, Qiushui
    Wang, Yu
    Yang, Huanghao
    Zhang, Guoqing
    An, Zhongfu
    Liu, Xiaogang
    Huang, Wei cc
    KAUST Grant Number
    OSR-2018-CRG7-3736
    Date
    2021-01-11
    Embargo End Date
    2021-07-11
    Submitted Date
    2020-08-12
    Permanent link to this record
    http://hdl.handle.net/10754/666936
    
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    Abstract
    Materials that exhibit X-ray-excited luminescence have great potential in radiation detection, security inspection, biomedical applications and X-ray astronomy1,2,3,4,5. However, high-performance materials are almost exclusively limited to ceramic scintillators, which are typically prepared under high temperatures6. Herein we report metal-free organic phosphors based on a molecular design that supports efficient triplet exciton harvesting to enhance radioluminescence. These organic scintillators exhibit a detection limit of 33 nGy s–1, which is 167 times lower than the standard dosage for X-ray medical examination and we demonstrate their potential application in X-ray radiography. These findings provide a fundamental design principle and new route for the creation of promising alternatives to incumbent inorganic scintillators. Furthermore, they offer new opportunities for development of flexible, stretchable X-ray detectors and imagers for non-destructive radiography testing and medical imaging.
    Citation
    Wang, X., Shi, H., Ma, H., Ye, W., Song, L., Zan, J., … Huang, W. (2021). Organic phosphors with bright triplet excitons for efficient X-ray-excited luminescence. Nature Photonics. doi:10.1038/s41566-020-00744-0
    Sponsors
    This work is supported by the National Key R&D Program of China (grant no. 2020YFA0709900), the National Natural Science Foundation of China (grant nos. 21975120, 21875104, 91833304, 21973043, 51673095 and 61935017), the Joint Research Funds of Department of Science and Technology of Shaanxi Province and Northwestern Polytechnical University (grant no. 2020GXLH-Z-006), Natural Science Fund for Distinguished Young Scholars of Jiangsu Province (grant no. BK20180037), China National Postdoctoral Program for Innovative Talents (grant no. BX20200278), Projects of International Cooperation and Exchanges NSFC (grant no. 51811530018), the Fundamental Research Funds for the Central Universities, Agency for Science, Technology and Research (A*STAR) under its AME program (grant nos. A1883c0011 and A1983c0038), and the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under award no. OSR-2018-CRG7-3736.
    Publisher
    Springer Science and Business Media LLC
    Journal
    Nature Photonics
    DOI
    10.1038/s41566-020-00744-0
    Additional Links
    http://www.nature.com/articles/s41566-020-00744-0
    ae974a485f413a2113503eed53cd6c53
    10.1038/s41566-020-00744-0
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