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Polyfluoride red-light-emitting material for solid-state lighting LED and preparation method and application of polyfluoride red-light-emitting material

A solid-state lighting and fluoride technology, applied in the direction of luminescent materials, chemical instruments and methods, electrical components, etc., can solve problems such as synthesis methods and emission efficiency constraints, and achieve good stability, high color reproduction, and high light efficiency. Effect

Active Publication Date: 2021-08-06
YUNNAN MINZU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Rare earth ions such as Eu 3+ 、Ce 3+ 、Sm 3+ Although it is an effective luminescent center of traditional red light materials, it is also restricted by factors such as price, synthesis method, and emission efficiency.

Method used

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  • Polyfluoride red-light-emitting material for solid-state lighting LED and preparation method and application of polyfluoride red-light-emitting material
  • Polyfluoride red-light-emitting material for solid-state lighting LED and preparation method and application of polyfluoride red-light-emitting material
  • Polyfluoride red-light-emitting material for solid-state lighting LED and preparation method and application of polyfluoride red-light-emitting material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take 15 ml of hydrofluoric acid from the polytetrafluoroate beaker with a pipette, adding a stirrer, and sequentially add 0.252 gram of sodium sodium sodium fluoride, 0.156 grams of lithium flucture and 0.555 g of dioxide, and stirring at a constant mixing. After 10 min, the polytetrafluoroethylene beaker was transferred to an oil bath of 130 ° C, and 0.012 grams of potassium manganganate was added after 3 hours, and then the beaker was removed from the oil bath and cooled from the oil bath. Ethanol. Wash the resulting solid, and finally dry 24 h in a vacuum drying box, resulting in the light pink powder, which is NA 3 Li 3 In 2 Fly 12 : MN 4+ Red light material.

[0030] XRD diffraction map of the red light material figure 1 As shown, the diffraction peak of the sample is exactly the same as the standard card JCPDS74-1271, and no hybrid or peak offset is observed.

[0031] Attach figure 2 For the excitation spectrum and emission spectrum of the red light material at room t...

Embodiment 2

[0036] Take 15 ml of hydrofluoric acid from the polytetrafluoroethylene beaker with a pipette, adding a stirrer, sequentially added 0.317 grams of sodium carbonate, 0.206 g of lithium nitrate and 0.555 grams of sodium nitrate and 0.555 g of dioxide, and stirred at a constant mixing 10min The polytetrafluoroethylene beaker was transferred to an oil bath of 130 ° C, and 0.012 grams of potassium manganganate was added after 3 h, and then the beaker was removed from the oil bath and washed with anhydrous ethanol. Solid, finally dried in a vacuum drying box for 24 h, the obtained light pink powder is NA 3 Li 3 In 2 Fly 12 : MN 4+ Red light material.

Embodiment 3

[0038] Take 15 ml of hydrofluoric acid from the polytetrafluoroate beaker with a pipette, adding a stirrer, and sequentially add 0.252 gram of sodium sodium sodium fluoride, 0.156 grams of lithium flucture and 0.555 g of dioxide, and stirring at a constant mixing. After 10 min, the polytetrafluoroethylene beaker was transferred to an oil bath of 120 ° C, and 0.012 grams of potassium manganganate was added after 3 hours, and then the beaker was taken out from the oil bath and cooled to room temperature. Ethanol. Wash the resulting solid, and finally dried in a vacuum drying tank for 24 h, the obtained light pink powder is NA 3 Li 3 In 2 Fly 12 : MN 4+ Red light material.

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Abstract

The invention belongs to the technical field of inorganic luminescent materials, and discloses a polyfluoride red-light-emitting material for a solid-state lighting LED, wherein the chemical structural formula of the red-light-emitting material is Na3Li3In2(1-x)F12:2xMn<4+>, wherein 2x is a molar percentage coefficient of doped Mn<4+> ions relative to In<3+> ions, and x is greater than 0 and less than or equal to 0.05. The prepared red-light-emitting material has a blue light excitation band with a half-peak width of 55-60 nm in a range of 400-520 nm, and has a narrow-band red light emission peak with a half-peak width of not more than 5 nm in a range of 628-633 nm.

Description

Technical field [0001] The present invention relates to the technical field of inorganic luminescent materials, and more particularly to a polyfluoride red light material for solid state illumination LEDs and a preparation method thereof. Background technique [0002] The development of science and technology leads the continuous innovation of solid-state lighting technology. In the past ten years, the light-emitting diode (LED) has been widely used due to energy saving, environmentally friendly, high light effect, good stability, and small size, and has become popular. A new generation of green illumination light source. At present, commercial white LEDs in the market are made from blue GaN light-emitting diodes and yellow rare earth fluorescent materials Y. 3 Al 5 O 12 : CE 3+ The combination is sealed, the combination package method is simple, and the white LEDs made of white LEDs are high, the thermal stability is good, but there is a shortcoming of the difference between hum...

Claims

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Application Information

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IPC IPC(8): C09K11/62H01L33/50
CPCC09K11/628H01L33/504Y02B20/00
Inventor 周强普海琦谢晓玲万婧屈睿汪正良
Owner YUNNAN MINZU UNIV
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