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Blue–violet emitting K2CuCl3 compound: facile synthesis, photoluminescence and radioluminescence properties

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Abstract

Copper-based lead-free perovskite derivatives have recently drawn great attention for their excellent optoelectronic properties and potential applications in light-emitting diodes (LEDs) and photodetectors. Herein, facile synthesis methods of cooling crystallization and wet ball milling (WBM) are adopted to synthesize K2CuCl3, resulting in single crystals (SCs) and powder samples, respectively. The as-fabricated K2CuCl3 samples exhibit blue–violet emission, with the highest photoluminescence quantum yield (PL QY) of 70% (under 280 nm excitation), and the photoluminescence (PL) is attributed to the self-trap excitons (STEs) emission. We also test the scintillation properties of K2CuCl3 for X-ray detection and imaging applications. A down-conversion LED is finally made by using K2CuCl3 as phosphor.

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As-synthesized K2CuCl3 can be used for either photoluminescence under UV light or X-ray imaging under X-ray radiation. -- Present in ms

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Acknowledgements

This work was supported by the National Key R&D Program of China (No. 2017YFB1002900), the Fundamental Research Funds for the Central Universities (No. 2021CX02058), National Natural Science Foundation of China (Nos. 61727808, 21701009).

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Authors and Affiliations

  1. Beijing Engineering Research Center of Mixed Reality and Advanced Displays, School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, People’s Republic of China

    Fa Zhang, Lingling Xie, Xitao Li, Bingheng Lu, Ziheng Zhao, Ting Jiang, Min Wang, Yafeng Wu, Bingkun Chen & Yongtian Wang

  2. Beijing Key Laboratory of Photoelectronic/Electrophotonics, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, People’s Republic of China

    Zhengguo Lin

  3. Institute of Microstructure and Property of Advanced Materials, Beijing Key Lab of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, People’s Republic of China

    Quan Zhou & Jiawen Xiao

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  1. Fa Zhang
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Zhang, F., Lin, Z., Xie, L. et al. Blue–violet emitting K2CuCl3 compound: facile synthesis, photoluminescence and radioluminescence properties. J Mater Sci 57, 10260–10270 (2022). https://doi.org/10.1007/s10853-022-07288-4

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