Multi-lattice near-infrared wide-spectrum fluorescent material as well as preparation method and application thereof
A fluorescent material, near-infrared technology, applied in the direction of luminescent materials, chemical instruments and methods, electrical components, etc., can solve the problems that restrict the development and application development of near-infrared fluorescent conversion materials, luminous intensity, thermal stability and quantum efficiency decline, etc. , to achieve the effects of strong practicability, low synthesis temperature, and convenient industrial production
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Embodiment 1
[0040] According to the chemical formula of phosphor Zn 0.95 Zr 0.95 Cr 0.1 Nb 2 o 8 Weigh 0.0475mol ZnO, 0.0475mol ZrO 2 , 0.005molCr 2 o 3 , 0.1mol Nb 2 o 5 , the above raw materials are all analytically pure, the above raw materials are mixed and fully ground, after mixing evenly, put into an alumina crucible for roasting, the roasting temperature is 1400 ° C for 12 hours. After cooling to room temperature, the product is crushed, ground, washed, and dried to obtain the chemical composition of Zn 0.95 Zr 0.95 Cr 0.1 Nb 2 o 8 Phosphor powder, its X-powder diffraction pattern (Cu target, λ=0.15406nm) and ZnZrNb 2 o 8 Standard card comparison such as figure 1 As shown, its excitation spectrum (under 927nm monitoring) see figure 2 . Depend on figure 1 It can be seen that the present embodiment successfully produced Zn 0.95 Zr 0.95 Cr 0.1 Nb 2 o 8 ;Depend on figure 2 It can be seen that the phosphor can be effectively excited by blue light and red light...
Embodiment 2
[0042] According to the chemical formula of phosphor Mg 0.99 Zr 0.99 Cr 0.02 Nb 2 o 8 Weigh 0.099mol MgO, 0.099mol ZrO 2 , 0.001molCr 2 o 3 , 0.1mol Nb 2 o 5 , the above raw materials are all analytically pure, the above raw materials are mixed and fully ground, after mixing evenly, put into an alumina crucible for roasting, the roasting temperature is 1450 ℃ for 20 hours. After cooling to room temperature, the product is crushed, ground, washed, and dried to obtain the chemical composition of Mg 0.99 Zr 0.99 Cr 0.02 Nb 2 o 8 Phosphor powder, its X-powder diffraction pattern (Cu target, λ = 0.15406nm) and MgZrNb 2 o 8 Standard card comparison such as Figure 4 As shown, its excitation spectrum (under 905nm monitoring) see Figure 5 . Depend on Figure 5 It can be seen that the phosphor can be effectively excited by blue light and red light in the range of 400-800nm, and the main excitation peak is located at 510nm. Image 6 Mg in this example 0.99 Zr 0.99 ...
Embodiment 3
[0044] According to the chemical formula of phosphor Zn 0.9975 Zr 0.9975 Cr 0.005 Ta 2 o 8 Weigh 0.0495mol ZnO, 0.0495mol ZrO 2 , 0.005molCr(NO 3 ) 3 , 0.1mol Ta2O5, the above raw materials are all analytically pure, the above raw materials are mixed and fully ground, after mixing evenly, put into an alumina crucible and roast, the roasting temperature is 1350 ° C for 30 hours. After cooling to room temperature, the product is crushed, ground, washed, and dried to obtain the chemical composition of Zn 0.9975 Zr 0.9975 Cr 0.005 Ta 2 o 8 Phosphor powder, its excitation spectrum (under 920nm monitoring) see Figure 7 . Depend on Figure 7 It can be seen that the phosphor can be effectively excited by blue light and red light in the range of 400-800nm, and the main excitation peak is located at 496nm. Figure 8 Zn in this example 0.9975 Zr 0.9975 Cr 0.005 Ta 2 o 8 The emission spectrum of Figure 8 It can be seen that the emission spectrum covers 700-1300nm, an...
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