Film preparation method capable of improving up-conversion luminescence
A technology for luminescent thin films and fluorescent materials, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve problems such as difficulty in compounding photonic crystals and up-conversion fluorescent substances, difficulty in controlling up-conversion luminescence, and chaotic arrangement of photonic crystal structural units
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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 into one and two to stir for 30min. Component two was then added while component one was being stirred 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 About 10 mL of the ethanol suspension was ...
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 into one and two to stir for 40min. Component two was then added while component one was being stirred 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 About 20mL of the ethanol suspension was pl...
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 into one and two to stir for 35min. Component two was then added while component one was being stirred 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 of the ethanol suspension was placed in a...
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