A preparation method for improving up-conversion luminescent film
A technology of light-emitting films and fluorescent materials, which is applied in the fields of light-emitting materials, chemical instruments and methods, etc., can solve the problems of disordered arrangement of photonic crystal structural units, difficulty in regulating up-conversion luminescence, and difficulty in compounding photonic crystals and up-conversion fluorescent substances.
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example 1
[0028] Take deionized water, ethanol and ammonia water at a volume ratio of 1:2:1 as component one solution, and take ethanol and tetraethyl orthosilicate at a volume ratio of 8:1 as component two solution, and set them at a speed of 600rpm respectively. Divide one solution and component two solution and stir for 30min. The component two solution was then added while stirring the component one solution using an electric stirrer at 600 rpm. After 1 min, adjust the stirrer speed to 500 rpm, and stir for 3 h. After the stirring was stopped, the SiO obtained was centrifuged and washed once with water and twice with alcohol. 2 Adding microspheres into ethanol solvent to prepare 6wt% SiO 2 The microsphere suspension is ready for use. A ytterbium-doped thulium-doped yttrium sodium fluoride fluorescent powder is prepared by using a solvothermal method, wherein the doping amount of ytterbium ions is 10wt%, and the doping amount of thulium ions is 0.5wt%.
[0029] Take 6wt% SiO 2 A...
example 2
[0031] Take deionized water, ethanol and ammonia water at a volume ratio of 1:3:1 as component one solution, and take ethanol and tetraethyl orthosilicate at a volume ratio of 9:1 as component two solution, and set them at a speed of 800rpm respectively. Divide one solution and component two solution and stir for 40min. The component two solution was then added while stirring the component one solution using an electric stirrer at 800 rpm. After 2 minutes, adjust the stirrer speed to 300 rpm, and stir for 2 hours. After the stirring was stopped, the SiO obtained was centrifuged and washed once with water and twice with alcohol. 2 Adding microspheres into ethanol solvent to prepare 10wt% SiO 2 The microsphere suspension is ready for use. A ytterbium-doped thulium-doped yttrium sodium fluoride fluorescent powder is prepared by a solvothermal method, wherein the doping amount of ytterbium ions is 15%, and the doping amount of thulium ions is 1.0%.
[0032] Take 10wt% SiO 2 Abo...
example 3
[0034] Take deionized water, ethanol and ammonia water at a volume ratio of 1:2:1 as component one solution, and take ethanol and tetraethyl orthosilicate at a volume ratio of 8:1 as component two solution, and set them at a speed of 700rpm respectively. Divide one solution and component two solution and stir for 35min. The component two solution was then added while stirring the component one solution using an electric stirrer at 700 rpm. After 1 min, adjust the stirrer speed to 300 rpm, and stir for 2 h. After the stirring was stopped, the SiO obtained was centrifuged and washed once with water and twice with alcohol. 2 Adding microspheres into ethanol solvent to prepare 8wt% SiO 2 The microsphere suspension is ready for use. A ytterbium-doped thulium-doped yttrium sodium fluoride fluorescent powder is prepared by a solvothermal method, wherein the doping amount of ytterbium ions is 12%, and the doping amount of thulium ions is 0.6%.
[0035] Take 8wt% SiO 2 About 25mL ...
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