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Large-Scale and Reversible Synthesis of Bright Upconversion Crystals with Almost 100%Yield by a Minimalist Method for Recyclable Application
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作者 Pengpeng Lei Yuan Liang +2 位作者 Pengye Du Yong Zhang Hongjie Zhang 《CCS Chemistry》 CSCD 2024年第6期1512-1522,共11页
Upconversion luminescence(UCL)materials have the potential for many applications due to their unique optical properties.Some technical challenges such as complex synthesis with low yield and nondegradability need to b... Upconversion luminescence(UCL)materials have the potential for many applications due to their unique optical properties.Some technical challenges such as complex synthesis with low yield and nondegradability need to be addressed for practical use.Here,we report for the first time a minimalist method for large-scale synthesis of Cs_(2)NaErCl_(6)UCL crystals with almost 100%yield,simply by dissolving metal chlorides in water and then drying,referred to as the“dissolve-dry”method.Cs_(2)NaErCl_(6)crystals produced under such mild conditions exhibited bright UCL at either 808 or 980 nm irradiation.UCL was achieved through an excited state absorption process,and the excellent performance was mainly attributed to the large unit cells of the crystals and the long lifetime of Er^(3+)excited energy levels.Moreover,the synthesis was reversible and could be scaled up unlimitedly,making it suitable for industrial applications,with recyclable products.The recyclable application of Cs_(2)NaErCl_(6)crystals as a luminescent medium in near-infrared light-emitting diode excitable upconversion devices was demonstrated based on its excellent recyclability.Our work not only provides a new strategy for large-scale synthesis of UCL crystals but also demonstrates the recyclability of this material and its related applications. 展开更多
关键词 rare earth UPCONVERSION reversible synthesis minimalist method APPLICATION
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