Post-processing method for Y3Al5O12:Ce<3+>fluorescent powder
A technology of y3al5o12 and fluorescent powder, which is applied in the direction of chemical instruments and methods, luminescent materials, etc., can solve the problems of uneven dispersion of fluorescent powder agglomeration, achieve the effect of improving the agglomeration phenomenon, overcoming the agglomeration phenomenon, and simple operation
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Embodiment 1
[0022] Heat 30 mL of DL-tartaric acid aqueous solution with a mass-volume concentration of 4 g / L to 50 °C, and then add 15 g of Y 3 Al 5 o 12 : Ce 3+ Phosphor powder, prepared into a phosphor suspension with a mass-volume concentration of 0.5 g / mL, stirred for 60 minutes, stopped stirring, naturally cooled to room temperature, centrifuged, washed with distilled water until neutral, and dried in an oven at 80°C for 12 hours, get the processed Y 3 Al 5 o 12 : Ce 3+ Phosphor.
[0023] Y before and after treatment 3 Al 5 o 12 : Ce 3+ Phosphor powder was characterized by D / max-3C X-ray diffractometer and Quanta200 environmental scanning electron microscope, the results are shown in Figure 1~3 . Depend on figure 1 It can be seen that Y after tartaric acid treatment 3 Al 5 o 12 : Ce 3+ Phosphor powder only appeared cubic yttrium aluminum garnet Y 3 Al 5 o 12 The diffraction peak (JCPDS card 88-2048), the peak shape of the diffraction peak and Y 3 Al 5 o 12 : C...
Embodiment 2
[0025] Heat 30mL of polyvinylpyrrolidone aqueous solution with a mass-volume concentration of 4g / L and a molecular weight of 10,000 to 70,000 to 60°C, and then add 12g of Y 3 al 5 o 12 : Ce 3+ Phosphor powder, prepared into a phosphor suspension with a mass-volume concentration of 0.4g / mL, stirred for 50 minutes, stopped stirring, naturally cooled to room temperature, centrifuged, washed with distilled water until neutral, and dried in an oven at 80°C for 12 hours, get the processed Y 3 al 5 o 12 : Ce 3+ Phosphor.
Embodiment 3
[0027] Heat 30 mL of cetyltrimethylammonium bromide aqueous solution with a mass-volume concentration of 6 g / L to 70 °C, then add 15 g of Y 3 al 5 o 12 : Ce 3+ Phosphor powder, prepared into a phosphor suspension with a mass-volume concentration of 0.5 g / mL, stirred for 70 minutes, stopped stirring, naturally cooled to room temperature, centrifuged, washed with distilled water until neutral, and dried in an oven at 80°C for 12 hours, get the processed Y 3 al 5 o 12 : Ce 3+ Phosphor.
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