Rare-earth halophosphate phosphor and prepration method and application thereof

A halophosphate and phosphor technology, which is applied in the field of rare earth halophosphate phosphor and its preparation, can solve the problems of powder coating process, increased difficulty of baking tube process, easy reaction with glass, shortened effective life of lamps, etc., to achieve It is beneficial to growth and development, prevention and treatment of osteoporosis, and the effect of lowering human cholesterol

Active Publication Date: 2010-11-10
孙德春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention applies (Ca, Zn) 3-x (PO 4 ) 2.14 :Gd x Phosphor, compared to (Ca 0.94 Zn 0.06 ) 3 (PO 4 ) 2 :Tl 0.16 , (Mg, Ba, Ca, Sr) 1-x-y Al 2 o 7 :Pb y Gd x Phosphor has made great progress, but there is still a problem of large light decay, which shortens the effective life of the lamp and brings high c

Method used

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  • Rare-earth halophosphate phosphor and prepration method and application thereof
  • Rare-earth halophosphate phosphor and prepration method and application thereof
  • Rare-earth halophosphate phosphor and prepration method and application thereof

Examples

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Example

[0041] Examples 1-20: Phosphors and their preparation

Example Embodiment

[0042] Example 1

[0043] Types and ratios of raw materials used:

[0044] La 2 O 3 : 0.830mol

[0045] MgO: 1.00mol

[0046] Gd 2 O 3 : 0.10mol

[0047] CeO 2 : 0.05mol

[0048] Nb 2 O 3 : 0.02mol

[0049] NH 4 Cl: 1.0mol

[0050] NH 4 F: 1.0mol

[0051] (NH 4 ) 2 HPO 4 : 1.0mol

[0052] Preparation method: accurately weigh the above-mentioned raw materials, and then weigh 1.0 g of H 3 BO 3 As a flux, mix it evenly, put it into a crucible, and place it in a high-temperature furnace with an oxidizing atmosphere for sintering. The above-mentioned raw materials crushed to the required particle size are put into a crucible, and placed in a high-temperature furnace with a weak reducing atmosphere for sintering, the sintering temperature is 1000-1350 ° C, and the sintering time is 1-10 hours; The phosphor powder of the present invention is obtained by washing with water, wet sieving and drying at 100-120°C. The phosphor emits UV-B ultraviolet light under the ...

Example Embodiment

[0056] The phosphor obtained in Example 2 and the single activator phosphor (Ca, Zn) 3-x (PO 4 ) 2.14 :Gd x (B) Comparison of emission spectral power distribution, and emission spectral power distribution comparison after aging under 185nm ultraviolet light for 1000 hours, respectively image 3 and Figure 4 As shown, the former has outstanding characteristics such as high luminous efficiency, low light decay, and good chemical stability.

[0057] The rare earth halophosphate of the present invention is applied to prevent and treat osteoporosis, reduce human cholesterol and cause vitamin D deficiency 3 , various diseases caused by high cholesterol, as well as medical equipment for the treatment of psoriasis and lighting and other fields, it can be made into fluorescent physiotherapy lamps and physiotherapy devices, etc., see the following examples for details.

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Abstract

The invention relates to a rare-earth halophosphate phosphor and a prepration method and application thereof. A structural formula of the phosphor is Ln1-x-yPO4M(Cl, F)2: CexRy, wherein Ln is one or combination of two elements of lanthanum and yttrium; M is one or combination of multiple elements of strontium, magnesium, calcium, barium and zinc; R is one or combination of multiple elements of bismuth, scandium, praseodymium, samarium, europium, neodymium, gadolinium, dysprosium, holmium, erbium, ytterbium and lutetium; and x and y are molar coefficients, x is more than or equal to 0.001 and less than or equal to 0.2, and y is more than or equal to 0.001 and less than or equal to 0.3. The rare-earth halophosphate phosphor emits UV-B band spectrum in sunlight, and has the characteristics of high luminous efficiency, low light attenuation, good chemical stability and the like; and the manufacturing method is simple and has low cost. The phosphor is prepared into fluorescent physiotherapy lamps by a conventional fluorescent lamp preparation process, which can be applied in the fields of medicinal treatment for preventing and treating osteoporosis, reducing human cholesterol and treating psoriasis and the like and illumination.

Description

technical field [0001] The invention relates to the technical field of phosphors and fluorescent lamps, in particular to a rare earth halophosphate phosphor, its preparation method and its application. Background technique [0002] At present, ordinary lighting lamps are used in the field of fluorescent lamps, such as incandescent lamps, energy-saving lamps, mercury lamps, sodium lamps, metal halide lamps, etc. These light sources emit visible spectrum and only have lighting functions. It also plays an important role in human beings and other aspects. There are many visible phosphors used to prepare fluorescent lamps, and there are some reports on the preparation of lamps with beneficial effects by using UV-B emission spectrum phosphors. For example, if the application number is 96116266.X (Ca 0.94 Zn 0.06 ) 3 (PO 4 ) 2 :Tl 0.16 Phosphor, as we all know, thallium is a highly toxic substance, so the phosphor will bring great pressure to the environment during the proce...

Claims

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Application Information

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IPC IPC(8): C09K11/86A61N5/06
Inventor 孙德春李志才崔伟东
Owner 孙德春
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