Germinate yellow fluorescent powder and preparation method thereof
A yellow phosphor, germanate technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of high price, toxicity of citron salt, etc., and achieve the effect of mild preparation conditions
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Embodiment 1
[0022] According to Zn 1.999 GeO 3.9 S 0.1 : 0.001Mn 2+ Weigh ZnO, GeO 2 , ZnS and MnCO 3 , the molar ratio between them is 1.899:1:0.1:0.001. After fully grinding and mixing, place it in a crucible, then bake it in a high-temperature furnace at 1150°C for 7 hours in a nitrogen atmosphere, and then cool it to room temperature to obtain germanate yellow. Phosphor.
[0023] Such as figure 1 as shown, figure 1 It is the excitation spectrum diagram of the phosphor powder prepared in Example 1, and the monitoring wavelength is 570 nanometers. The excitation spectrum of the phosphor powder prepared in this embodiment is a broad spectrum, covering the ultraviolet and purple light regions. The excitation peak is located near 360 nm, and the spectral peak is high. The fluorescent powder of this embodiment can be effectively excited by ultraviolet and ultraviolet light chips. Such as figure 2 as shown, figure 2 It is the emission spectrum diagram of the phosphor powder prepa...
Embodiment 2
[0025] According to Zn 1.9 GeO 3.9 S 0.1 : 0.1Mn 2+ Weigh ZnO, GeO 2 , ZnS and MnCO 3 , the molar ratio between them is 1.8:1:0.1:0.1, after fully grinding and mixing evenly, place it in a crucible, then bake in a high-temperature furnace at 1350°C for 2 hours in an argon atmosphere, and then cool to room temperature to obtain germanate Yellow phosphor.
[0026] The excitation spectrum of the phosphor powder in this embodiment is a wide spectrum, covering the ultraviolet and violet light regions, and the excitation peak is located near 360nm, with a high spectral peak, indicating that the phosphor powder of this embodiment can be effectively excited by the ultraviolet and violet light chips. When the excitation wavelength of the emission spectrum is 360nm, the emission of the phosphor powder in this embodiment is broadband yellow light emission, and the emission peak is located near 570nm, indicating that the phosphor powder of this embodiment is suitable for yellow phosp...
Embodiment 3
[0028] According to Zn 1.999 GeO 2.001 S 1.999 : 0.001Mn 2+ Weigh ZnS, GeO 2 and MnCO 3 , the molar ratio between them is 1.999:1:0.001. After fully grinding and mixing, place it in a crucible, and then bake in a high-temperature furnace at 1250°C for 5 hours under a nitrogen atmosphere, and then cool to room temperature to obtain a germanate yellow phosphor. .
[0029] The excitation spectrum of the phosphor powder in this embodiment is a wide spectrum, covering the ultraviolet and violet light regions, and the excitation peak is located near 360nm, with a high spectral peak, indicating that the phosphor powder of this embodiment can be effectively excited by the ultraviolet and violet light chips. When the excitation wavelength of the emission spectrum is 360nm, the emission of the phosphor powder in this embodiment is broadband yellow light emission, and the emission peak is located near 570nm, indicating that the phosphor powder of this embodiment is suitable for yell...
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