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A kind of oxide red luminous body without rare earth doping and lighting device

A technology for red light-emitting and lighting devices, applied in semiconductor devices, light-emitting materials, chemical instruments and methods, etc., can solve the problems of complex preparation methods, no commercialization, and high equipment requirements, and achieve improved luminous efficiency, improved color purity, The effect of reducing energy consumption

Active Publication Date: 2019-03-01
烟台布莱特光电材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The third method is the combination of ultraviolet or near-ultraviolet and red, green and blue light emitters. Since there are still many problems in the technology of manufacturing stable ultraviolet or near-ultraviolet chips, this scheme has not been commercialized in large quantities at present.
However, it also has the disadvantages of complex preparation methods, high equipment requirements, and high sales prices.

Method used

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  • A kind of oxide red luminous body without rare earth doping and lighting device
  • A kind of oxide red luminous body without rare earth doping and lighting device
  • A kind of oxide red luminous body without rare earth doping and lighting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This example is used to illustrate the rare earth-doped oxide red emitter and its preparation method of the present invention.

[0042] According to Ba in Table 1 Example 1 0.994 SO 4 : Bi 0.006 The stoichiometric ratio, weighed high-purity BaCO 3 (31.38 g), (NH 4 ) 2 SO 4 (25.37 g, 20% excess), Bi 2 o 3 (0.22 grams), and 0.4mol / L hydrochloric acid (500 milliliters). BaCO 3 , Bi 2 o 3 Dissolve in hydrochloric acid (the first aqueous solution), heat to 80°C on a water bath, and set aside. Will (NH 4 ) 2 SO 4 Dissolve in deionized water (the second aqueous solution), transfer the second aqueous solution to a separatory funnel, and slowly drop it into the first aqueous solution at 80°C, stirring continuously during the process. The prepared precipitate was aged at 80°C for 2 hours, filtered and washed 3 times with distilled water, and dried at 180°C for 2 hours. The dried precipitate was solid-phase sintered at 850°C for 2 hours, cooled naturally to room te...

Embodiment 2

[0046] This example is used to illustrate the rare earth-doped oxide red emitter and its preparation method of the present invention.

[0047] According to Ba in Table 1 Example 2 0.887 Sr 0.10 SO 4 : Bi 0.005 ,Pb 0.008 The stoichiometric ratio, weighed high-purity BaCO 3 (28.01 g), PbCO 3 (0.34 g), SrCO 3 (2.36 g), (NH 4 ) 2 SO 4 (27.49 g, 30% excess), Bi 2 o 3 (0.19 g), and 0.4 mol / L hydrochloric acid (500 ml). BaCO 3 , PbCO 3 , SrCO 3 , Bi 2 o 3 Dissolve in hydrochloric acid (first aqueous solution), heat to 90°C on a water bath, and set aside. Will (NH 4 ) 2 SO 4 Dissolve in deionized water (the second aqueous solution), transfer the second aqueous solution to a separatory funnel, and slowly drop it into the first aqueous solution at 90° C., stirring continuously during the process. The prepared precipitate was aged at 90°C for 1 hour, filtered and washed 3 times with distilled water, and dried at 180°C for 2 hours. The dried precipitate was solid-pha...

Embodiment 3

[0051] This example is used to illustrate the rare earth-doped oxide red emitter and its preparation method of the present invention.

[0052] According to Ba in Table 1 Example 3 0.976 Cd 0.02 SO 4 : Bi 0.004 The stoichiometric ratio, weighed high-purity BaCO 3 (30.82 g), CdCO 3 (0.11 g), (NH 4 ) 2 SO 4 (31.71 g, 50% excess), Bi 2 o 3 (0.15 g), and 0.4 mol / L hydrochloric acid (500 ml). BaCO 3 , CdCO 3 , Bi 2 o 3 Dissolve in hydrochloric acid (first aqueous solution), heat to 85°C on a water bath, and set aside. Will (NH 4 ) 2 SO 4 Dissolve in deionized water (the second aqueous solution), transfer the second aqueous solution to a separatory funnel, and slowly drop it into the first aqueous solution at 85°C, stirring continuously during the process. The prepared precipitate was aged at 85°C for 3 hours, filtered and washed three times with distilled water, and dried at 180°C for 1 hour. The dried precipitate was solid-phase sintered at 800°C for 4 hours, coo...

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Abstract

The invention relates to a rare earth-free oxide red luminous body. The chemical formula of the rare earth-free oxide red luminous body is (Ba1-x-y-zMx)SO4:Biy, M'Z, wherein M is selected from one or more of Mg, Ca, Sr, Be, Zn and Cd, M' is selected from one or two of Pb and Mn, x, y and z are independently as the following that: x is greater than or equal to 0 and smaller than or equal to 1, y is smaller than or equal to 0.2, and z is greater than or equal to 0 and smaller than or equal to 0.1. The rare earth-free oxide red luminous body is a brand new oxide red luminous body. The invention also provides a preparation method and application of the rare earth-free oxide red luminous body, and a luminescent device containing the rare earth-free oxide red luminous body. According to the invention, the energy consumption and requirements for equipment are reduced, the used raw materials are cheap and easily available, and the prepared oxide red luminous body ahs good luminescent performance and stability.

Description

technical field [0001] The invention belongs to the field of luminescent materials, and in particular relates to a non-rare-earth-doped oxide red luminous body, a preparation method and application thereof, and a light-emitting device containing the non-rare-earth-doped oxide red luminous body. Background technique [0002] Light-emitting diode (LED) has the characteristics of high efficiency, energy saving, safety, and long life, and is recognized as the fourth-generation lighting solution. There are 3 ways to realize LED white light. The first way is to use red, green and / or blue LED chips alone to mix white light. Since this solution uses two or three kinds of LED chips, its driving current and service life , luminous efficiency, etc. are all different, so the structure of the device is more complicated, and it is difficult to realize commercialization; the second method is to use a combination of blue light chip and yellow light emitter (or a mixture of yellow and red li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/54C09K11/55C09K11/74H01L33/50
CPCC09K11/0833C09K11/0888C09K11/679C09K11/7435H01L33/50
Inventor 刘景盛豆帆朱洪维周小平王雷盛振宏
Owner 烟台布莱特光电材料有限公司
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