A Novel Spectrally Tunable Self-Activating Phosphor
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A technology of self-activation and fluorescent powder, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problem of high cost
Active Publication Date: 2020-07-28
合肥名龙电子科技有限公司
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However, the cost of phosphors based on various rare earth materials is relatively high, so it is necessary to find a relatively cheap material to replace, such as self-activated phosphors that can emit light without doping rare earth ions
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Embodiment 1
[0020] According to the expression Ca 2-x A x Ba 3 (PO 4 ) 2 SiO 4 , take A=Sr, x=0.4, weigh BaCO 3 (0.7464 g), NH 4 h 2 PO 4 (0.2900 g), CaCO 3 (0.2019 g), SrCO 3 (0.0744 g), SiO 2 (0.0758 grams). Grind thoroughly in an agate mortar and mix evenly, transfer to a corundum crucible, place the resulting mixture in a muffle furnace, 2 +N 2 Burned at 1000°C for 6 hours in a reducing atmosphere to obtain the required self-activated phosphor.
Embodiment 2
[0022] According to the expression Ca 2-x A x Ba 3 (PO 4 ) 2 SiO 4 , take A=Sr, x=0.8, weigh BaCO 3 (0.7289 g), NH 4 h 2 PO 4 (0.2832 g), CaCO 3 (0.1479 g), SrCO 3 (0.1454 g), SiO 2 (0.0740 grams). Grind thoroughly in an agate mortar and mix evenly, transfer to a corundum crucible, place the resulting mixture in a muffle furnace, 2 +N 2 Burned at 1000°C for 6 hours in a reducing atmosphere to obtain the required self-activated phosphor.
Embodiment 3
[0024] According to the expression Ca 2-x A x Ba 3 (PO 4 ) 2 SiO 4 , take A=Sr, x=1.6, weigh BaCO 3 (0.6903 g), NH 4 h 2 PO 4 (0.2706 g), CaCO 3 (0.0471 g), SrCO 3 (0.2778 g), SiO 2 (0.0707 grams). Grind thoroughly in an agate mortar and mix evenly, transfer to a corundum crucible, place the resulting mixture in a muffle furnace, 2 +N 2 Burned at 1000°C for 6 hours in a reducing atmosphere to obtain the required self-activated phosphor.
[0025] combine figure 2 , Figure 4 Illustrate embodiment 1~3, figure 2 It is the normalized emission spectrum of the self-activating phosphor material with adjustable spectrum in Examples 1 to 3 of the present invention. Curve 1 is the emission spectrum of the self-activating phosphor material with adjustable spectrum in Example 1, and curve 2 is the adjustable spectrum in Example 2. The emission spectrum of self-activating phosphor material, curve 3 is the emission spectrum of embodiment 3 spectrally adjustable self-activ...
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Abstract
The invention relates to the field of design and synthesis of novel fluorescent powder and spectrum regulation and control, and in particular to self-activated fluorescent powder for achieving spectrum adjustability through cation substitution. The fluorescent powder is made of phosphate as a matrix, the chemical formula of the phosphate is Ca2-xAxBa3(PO4)2SiO4, and in the formula, A is one or twoelements of Sr and Mg; x is a mole doping amount of A<2+> ions which are adopted to dope and substitute crystal lattice sites of Ca<2+>. At a sintering temperature and under conditions of same otherenvironments, regulation and control on the emission spectrum of the self-activated fluorescent powder is achieved by adjusting the A<2+> ion doping amount. The fluorescent powder is synthesized through a conventional high-temperature solid-phase method, is simple in synthesis method, easy to operate and good in repeatability, and in addition, as self-activated fluorescent powder, the fluorescentpowder is free of rare-earth ions as activation ions, so that the preparation cost can be greatly reduced. The fluorescent powder provided by the invention can be effectively activated by ultravioletlight of 220-300nm.
Description
technical field [0001] The invention relates to the fields of design, synthesis and spectrum control of novel phosphors, in particular to a self-activated phosphor that realizes spectrum control through ion substitution, belongs to the field of solid-state luminescence technology, and has great application prospects in the fields of lighting and display. Background technique [0002] Today, energy and the environment are two key issues for the sustainable development and well-being of human beings, and are the current and long-term scientific and technological priorities. Most of the current commercial light sources need to use phosphors for light conversion. Fluorescent lamps made of rare earth tricolor phosphors are very efficient and energy-saving new light sources, and are the key development direction of the world's lighting sources. However, the cost of phosphors based on various rare earth materials is high, so it is necessary to find a relatively cheap material to re...
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