Rare-earth-based halide luminescent material, and preparation method and application thereof
A technology of luminescent materials and halides, which is applied in the direction of luminescent materials, rare earth metal compounds, chemical instruments and methods, etc., can solve the problems of few multi-mode excitation halide luminescent materials, achieve high quantum efficiency, enhance near-infrared absorption, enhance The effect of upconverting emissions
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[0056] The present invention also provides a preparation method of the above-mentioned rare earth-based halide light-emitting material, comprising the following steps:
[0057] The cesium source, the sodium source, the erbium source, the ytterbium source and the concentrated hydrochloric acid are mixed, and the hydrothermal reaction is carried out at 170-190 DEG C to obtain the rare earth-based halide luminescent material;
[0058] The rare earth-based halide light-emitting material has the chemical formula shown in formula I;
[0059] Cs 2 NaEr 1-x Yb x Cl 6 formula I;
[0060] In formula I, 0≤x≤1.
[0061] In some embodiments of the present invention, the preparation method of the rare earth-based halide light-emitting material includes the following steps:
[0062] A) material a is mixed with concentrated hydrochloric acid to obtain precursor solution;
[0063] Described material a is cesium source;
[0064] B) mixing the material b with the precursor solution, and...
Embodiment 1
[0103] 1) 2mmol cesium chloride is mixed and dissolved with 5mL concentrated hydrochloric acid (mass concentration is 37%) to obtain a precursor solution;
[0104] 2) Mix 1 mmol of sodium chloride and 1 mmol of erbium chloride with the precursor solution, then place in a 25 mL reaction kettle, heat up to 180 °C for 10 h, and cool down to room temperature at 3 °C / h to obtain a reaction product mixture system;
[0105] 3) The reaction product mixture system was filtered, washed with ethanol, and dried at 60° C. for 5 h to obtain Cs 2 NaErCl 6 Luminescent material.
Embodiment 2
[0107] 1) 2mmol cesium chloride is mixed and dissolved with 5mL concentrated hydrochloric acid (mass concentration is 37%) to obtain a precursor solution;
[0108] 2) Mix 1mmol sodium chloride, 0.9mmol erbium chloride, 0.1mmol ytterbium chloride with the precursor solution, then place in a 25mL reactor, heat up to 180°C for 10h, and cool down to room temperature at 4°C / h , obtain the reaction product mixed system;
[0109] 3) The reaction product mixture system was filtered, washed with ethanol, and dried at 70°C for 4 hours to obtain Cs 2 NaEr 0.9 Yb 0.1 Cl 6 Luminescent material.
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