Mn<4+>-doped germanate infrared material and preparation method thereof
A technology of germanate and red light, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of unfavorable large-scale industrial production and high requirements for synthesis equipment, and achieve simple and environmentally friendly preparation processes, low requirements for synthesis equipment, and high performance. The effect of color index
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Embodiment 1
[0027] Accurately weigh 0.001mol potassium carbonate (K 2 CO 3 ), 0.004mol germanium oxide (GeO 2 ) and 4×10 ‐8 mol manganese carbonate (MnCO 3 ), in this example, Mn 4+ Molar doping concentration (relative to Ge 4+ ) was 0.001%, ground in the grinder for 10 minutes, mixed evenly according to the metering ratio, and then transferred to the muffle furnace. Pre-fire at 400°C for 1 hour, take it out and grind it for 5 minutes, then sinter at 500°C for 6 hours, take it out after cooling to get the product. Its XRD (BrukerD8Advance X-ray diffractometer detects) such as figure 1 As shown in b, XRD shows that the product is pure K 2 Ge 4 o 9 Mutually. The product glows red under a UV light. Fluoromax‐4 fluorescence spectrometer (HORIBA Jobin Yvon Inc.) was used to detect the luminescent properties of the product at room temperature, such as figure 2 As shown, the excitation spectrum of this material consists of two broad bands at 361nm and 467nm, and its largest excitati...
Embodiment 2
[0029] Accurately weigh 0.001mol potassium carbonate (K 2 CO 3 ), 0.004mol germanium oxide (GeO 2 ) and 2×10 ‐7 mol manganese carbonate (MnCO 3 ), in this example, Mn 4+ Molar doping concentration (relative to Ge 4+ ) was 0.005%, and ground for 22 minutes in a grinder, mixed evenly according to the metering ratio, and then transferred to a muffle furnace. Pre-fire at 300°C for 1.2 hours, take it out and grind it for 7 minutes, then sinter at 600°C for 2 hours, take it out after cooling to get the product. Its XRD (BrukerD8Advance X-ray diffractometer detects) such as figure 1 As shown in c, XRD shows that the product is pure K 2 Ge 4 o 9 Mutually. The product glows red under a UV light. Fluoromax-4 fluorescence spectrometer (HORIBA Jobin Yvon Inc.) was used to detect the luminescent performance of the product at room temperature, and the shape of the excitation spectrum and emission spectrum was similar to that of Example 1.
Embodiment 3
[0031] Accurately weigh 0.001mol potassium carbonate (K 2 CO 3 ), 0.004mol germanium oxide (GeO 2 ) and 4×10 ‐7 mol manganese carbonate (MnCO 3 ), in this example, Mn 4+ Molar doping concentration (relative to Ge 4+ ) was 0.01%, ground for 30 minutes in the grinder, mixed evenly according to the metering ratio, and then transferred to the muffle furnace. Pre-fire at 360°C for 1.8 hours, take it out and grind it for 6 minutes, then sinter at 700°C for 2 hours, take it out after cooling to get the product. Its XRD (BrukerD8Advance X-ray diffractometer detects) such as figure 1 As shown in d, XRD shows that the product is pure K 2 Ge 4 o 9 Mutually. The product glows red under a UV light. Fluoromax-4 fluorescence spectrometer (HORIBA Jobin Yvon Inc.) was used to detect the luminescent performance of the product at room temperature, and the shape of the excitation spectrum and emission spectrum was similar to that of Example 1.
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