Infrared up-conversion fluorescent powder and preparation method thereof
An infrared up-conversion and phosphor technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of high cost and harsh production conditions, and achieve the effects of low equipment cost, stable quality and strong repeatability
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Embodiment 1
[0033] With rare earth oxide as raw material, weigh 89.20g Y 2 o 3 , 39.41g Yb 2 o 3 , 1.91g Er 2 o 3 Add 200ml deionized water, stir evenly and add 295.3g weight concentration? % nitric acid, keep warm at 70°C, stir to dissolve the rare earth oxide completely, add deionized water, and prepare 1000ml rare earth nitrate solution;
[0034] Take 112.0g NH 4 F add 300ml deionized water to dissolve and form NH 4 F solution, and then add it dropwise to the constantly stirring rare earth nitrate solution, after the dropwise addition, let it stand, filter, wash, dry at 60°C for 12h, and then grind it thoroughly with 41.99g NaF to obtain the mixture, and put it under N 2 Heat treatment at 500°C for 1 hour under the atmosphere, and after cooling, crush to obtain the inventive product:
[0035] NaY 0.79 Yb 0.20 Er 0.01 f 4 .
[0036] X-ray diffraction pattern see figure 1 . TEM (transmission electron microscope) photos see figure 2 .
Embodiment 2
[0038]With rare earth nitrate as raw material, weigh 200.68g Y(NO 3 ) 3 , 89.76g Yb (NO 3 ) 3 , 7.07g Er(NO 3 ) 3 Add deionized water to prepare 1600ml rare earth nitrate solution. Take 112.0gNH 4 F was added to 500ml deionized water to dissolve it to form NH 4 F solution, and then add it dropwise to the constantly stirring rare earth nitrate solution, after the dropwise addition, let it stand, filter, wash, and dry at 120°C for 2h, then mix with 94.03g Na 2 SiF 6 The mixture obtained by jet milling, in H 2 Heat treatment at 300°C for 6 hours under the atmosphere, and after cooling, the inventive product was obtained by crushing:
[0039] NaY 0.73 Yb 0.25 Er 0.02 f 4 .
Embodiment 3
[0041] Using rare earth carbonate as raw material, weigh 159.24g Y 2 (CO 3 ) 3 , 26.31g Yb 2 (CO 3 ) 3 , 2.57g Er 2 (CO 3 ) 3 Add 200ml of deionized water, stir evenly, add 295.3g of concentrated nitric acid, dissolve completely, add deionized water, and prepare 2000ml of rare earth nitrate solution. Take 113.0g NH 4 F add 300ml deionized water to dissolve and form NH 4 F solution, and then add it dropwise to the constantly stirring rare earth nitrate solution, after the dropwise addition, let it stand, filter, wash, and dry at 80°C for 6h, then mix with 37.04g NH 4 F. 84.01g NaHCO 3 After ball milling, the mixture was obtained in N 2 Heat treatment at 600°C for 1 hour in the atmosphere, and then pulverize after cooling to obtain the inventive product: NaY 0.89 Yb 0.10 Er 0.01 f 4 .
PUM
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