a doped mn 4+ Hexafluoride red fluorescent powder and synthetic method thereof
A technology of red phosphor and hexafluoride, applied in the field of hexafluoride-doped Mn4+ red phosphor and its synthesis
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Embodiment 1
[0024] Add hexafluorosilicic acid to 2.5mL hydrofluoric acid solution (40% wt), then add 0.03g potassium hexafluoromanganate and stir for 30 minutes, and finally add 1.86g tetramethylammonium fluoride and continue stirring for 8 hours; the obtained precipitate Wash each 3 times with glacial acetic acid and absolute ethanol, and finally place the product in a vacuum oven and dry it for 12 hours, and the orange-yellow powder obtained is the final product [(CH 3 ) 4 N] 2 Si 1-x f 6 :xMn 4+ .
[0025] attached figure 1 for [(CH 3 ) 4 N] 2 Si 1-x f 6 :xMn 4+ The XRD diffraction pattern of this sample shows that the powder diffraction peaks of this sample are a series of independent narrow peaks, indicating that the sample has good crystallinity.
[0026] attached figure 2Shown as [(CH 3 ) 4 N] 2 Si 1-x f 6 :xMn 4+ The scanning electron microscope picture of the sample particle size is 2-5 μm.
[0027] attached image 3 Shown are the room temperature excitation...
Embodiment 2
[0030] First add 0.13 g of germanium dioxide to 2.5 mL of hydrofluoric acid solution (40% wt), then add 0.03 g of potassium hexafluoromanganate and stir for 30 minutes, and finally add 1.86 g of tetramethylammonium fluoride and continue stirring for 8 hours; the resulting precipitate The product was washed 3 times with glacial acetic acid and absolute ethanol, and finally the product was placed in a vacuum drying oven for 12 hours, and the orange-yellow powder obtained was the final product [(CH 3 ) 4 N] 2 Ge 1-x f 6 :xMn 4+ .
[0031] attached Figure 5 for [(CH 3 ) 4 N] 2 Ge 1-x f 6 :xMn 4+ The XRD diffraction pattern of this sample shows that the powder diffraction peaks of this sample are a series of independent narrow peaks, indicating that the sample has good crystallinity.
[0032] attached Figure 6 Shown as [(CH 3 ) 4 N] 2 Ge 1-x f 6 :xMn 4+ The scanning electron microscope picture of the sample particle size is 5-10 μm.
[0033] attached Figure ...
Embodiment 3
[0036] First add 0.49mL hexafluorotitanic acid into 2.5mL hydrofluoric acid solution (40% wt), then add 0.03g potassium hexafluoromanganate and stir for 30 minutes, and finally add 0.93g tetramethylammonium fluoride and continue stirring for 8 hours; the obtained The precipitate was washed 3 times with glacial acetic acid and absolute ethanol, and finally the product was placed in a vacuum drying oven for 12 hours, and the orange-yellow powder obtained was the final product [(CH 3 ) 4 N] 2 Ti 1-x f 6 :xMn 4+ .
[0037] attached Figure 9 for [(CH 3 ) 4 N] 2 Ti 1-x f 6 :xMn 4+ The XRD diffraction pattern of this sample shows that the powder diffraction peaks of this sample are a series of independent narrow peaks, indicating that the sample has good crystallinity.
[0038] attached Figure 10 Shown as [(CH 3 ) 4 N] 2 Ti 1-x f 6 :xMn 4+ The scanning electron microscope picture of the sample particle size is 3-5 μm.
[0039] attached Figure 11 Shown are the ...
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