Up-conversion micron particles, preparation method thereof and fluorescence lifetime regulation and control method
A technology of micron particles and excitation light, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of unpublished patents, research on the regulation of fluorescence lifetime of fixed materials, etc., to achieve simple process, simple and feasible regulation method, and high product purity. Effect
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Embodiment 1
[0030] This embodiment synthesizes NaLuF 4 :Yb 3+ / Er 3+ (90 / 2mol%) the method of microrod realizes in the following steps:
[0031] (1) Add 0.16mL of 0.2mol / L lutetium acetate, 1.8mL of 0.2mol / L ytterbium acetate, 0.04mL of 0.2mol / L erbium acetate to 8mL of 0.2mmol of citric acid tris Stir in the aqueous solution of sodium for 15min;
[0032] (2) Add 1 mL of an aqueous solution containing 2.5 mmol of ammonium fluoride to the above solution and stir for 1 h.
[0033] (3) Transfer the above mixed solution to a 20mL polytetrafluoroethylene reactor, and react at 200°C for 12h,
[0034] (4) After the reaction was finished, it was naturally cooled to room temperature, and the reaction solution was washed and centrifuged three times with ethanol and water, and the obtained white centrifuged product was dried in a vacuum oven at 50° C. for 12 hours for later use.
[0035] This embodiment tests NaLuF as follows 4 :Yb 3+ / Er 3+(90 / 2mol%) Fluorescence Spectrum of Microrods:
[...
Embodiment 2
[0043] This embodiment synthesizes NaLuF 4 :Yb 3+ / Ho 3+ (90 / 2mol%) the method of microrod realizes in the following steps:
[0044] (1) Add 0.16mL of 0.2mol / L lutetium acetate, 1.8mL of 0.2mol / L ytterbium acetate, 0.04mL of 0.2mol / L holmium acetate to a total of 2mL rare earth acetate aqueous solution into 8mL of 0.2mmol tris-citric acid Stir in the aqueous solution of sodium for 15min;
[0045] (2) Add 1 mL of an aqueous solution containing 2.5 mmol of ammonium fluoride to the above solution and stir for 1 h.
[0046] (3) Transfer the above mixed solution to a 20mL polytetrafluoroethylene reactor, and react at 200°C for 12h,
[0047] (4) After the reaction was finished, it was naturally cooled to room temperature, and the reaction solution was washed and centrifuged three times with ethanol and water, and the obtained white centrifuged product was dried in a vacuum oven at 50° C. for 12 hours for later use.
[0048] This embodiment tests NaLuF as follows 4 :Yb 3+ / Ho ...
Embodiment 3
[0056] This embodiment synthesizes NaLuF 4 :Yb 3+ / Tm 3+ (90 / 1mol%) the method of microrod realizes in the following steps:
[0057] (1) Add 0.18mL of 0.2mol / L lutetium acetate, 1.8mL of 0.2mol / L ytterbium acetate, 0.02mL of 0.2mol / L thulium acetate to 8mL of 0.2mmol of citric acid tris Stir in the aqueous solution of sodium for 15min;
[0058] (2) Add 1 mL of an aqueous solution containing 2.5 mmol of ammonium fluoride to the above solution and stir for 1 h.
[0059] (3) Transfer the above mixed solution to a 20mL polytetrafluoroethylene reactor, and react at 200°C for 12h,
[0060] (4) After the reaction was finished, it was naturally cooled to room temperature, and the reaction solution was washed and centrifuged three times with ethanol and water, and the obtained white centrifuged product was dried in a vacuum oven at 50° C. for 12 hours for later use.
[0061] This embodiment tests NaLuF as follows 4 :Yb 3+ / Tm 3+ (90 / 1mol%) Fluorescence Spectrum of Microrods:
...
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