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Near-infrared light-emitting material, preparation method and light-emitting device

A technology of luminescent materials and light-emitting devices, which is applied in the direction of luminescent materials, chemical instruments and methods, semiconductor devices, etc., can solve problems such as narrow near-infrared emission bands, and achieve easy industrial operation, simple synthesis process, and no environmental pollution Effect

Active Publication Date: 2021-06-22
江西离子型稀土工程技术研究有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a near-infrared luminescent material, a preparation method and a light-emitting device, aiming to solve the problem of narrow near-infrared emission band obtained by existing near-infrared chips

Method used

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  • Near-infrared light-emitting material, preparation method and light-emitting device
  • Near-infrared light-emitting material, preparation method and light-emitting device
  • Near-infrared light-emitting material, preparation method and light-emitting device

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A near-infrared luminescent material whose theoretical chemical composition is Ca 3 sc 0.07 (BO 3 ) 3 : 0.03Cr, according to its stoichiometric ratio, accurately weigh CaCO 3 (analytical pure), Sc 2 o 3 (analytical pure), H 3 BO 3 (analytical pure), Cr 2 o 3 (Analytical pure) raw materials; after grinding and mixing the above raw materials evenly, sintering at 1100°C for 10h under air atmosphere, the heating rate is 4°C / min, and the sintered product is obtained after cooling to room temperature; the obtained sintered product is crushed, washed, and sieved , to obtain the final sample after drying. Utilize X-ray powder diffractometer to analyze the luminescent material obtained in embodiment 1, obtain the X-ray powder diffraction pattern of sample, as figure 1 shown. Utilize the fluorescence spectrometer to analyze the luminescent material in embodiment 1, obtain the excitation and emission spectrum of the sample, such as figure 2 shown. Depend on figure ...

Embodiment 2

[0031] A near-infrared luminescent material whose theoretical chemical composition is Be 3 sc 0.07 (BO 3 ) 3 : 0.03Cr, according to its stoichiometric ratio, accurately weigh BeO (analytical pure), Sc 2 o 3 (analytical pure), H 3 BO 3 (analytical pure), Cr 2 o 3 (Analytical pure) raw materials; after grinding and mixing the above raw materials evenly, sintering at 1200°C for 10h under air atmosphere, the heating rate is 4°C / min, and the sintered product is obtained after cooling to room temperature; the obtained sintered product is crushed, washed, and sieved , to obtain the final sample after drying. Utilize X-ray powder diffractometer to analyze the luminescent material obtained in embodiment 2, obtain the X-ray powder diffraction pattern of sample, as image 3 shown. Utilize the fluorescence spectrometer to analyze the luminescent material in embodiment 2, obtain the excitation and emission spectrum of the sample, such as Figure 4 shown. Depend on Figure 4 It...

Embodiment 3

[0033] A near-infrared luminescent material whose theoretical chemical composition is Ca 3 sc 0.07 (BO 3 ) 3 : 0.03Cr, according to its stoichiometric ratio, accurately weigh CaCO 3 (analytical pure), Sc 2 o 3 (analytical pure), H 3 BO 3 (analytical pure), Cr 2 o 3 (Analytical pure) raw materials; after grinding and mixing the above raw materials evenly, sintering at 1100°C for 10h under air atmosphere, the heating rate is 4°C / min, and the sintered product is obtained after cooling to room temperature; the obtained sintered product is crushed, washed, and sieved , to obtain the final sample after drying. Utilize the fluorescence spectrometer to analyze the luminescent material in embodiment 3, obtain the excitation and emission spectrum of the sample, such as Figure 5 shown. Depend on Figure 5 It can be seen that the luminescent material can be excited by blue light, and the main peak of the emission spectrum is located around 813nm. The full width at half maxim...

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Abstract

The invention discloses a near-infrared light-emitting material, a preparation method and a light-emitting device. The chemical composition of the near-infrared light-emitting material is AyQaMbOq: zD, wherein the element A is one or two of Li, Na, Be, Ca and Zn; the element Q is one or two of Y, La, Lu, Gd and Sc; the element M is one or two of B, Ga, In, Al and Si; the element D is one or two of Cr, Yb, Er, Nd, Pr, Sm, Bi and Ce; and 1 < = y < = 3, 0 < = a < = 1, 1 < = b < = 3, 5 < = q < = 9, and 0 < = z < = 9. The emission spectrum band of the luminescent material shows broadband emission with the peak wavelength of 700-1200 nm, the effective absorption wavelength range is 350-808 nm, the light-emitting material has the characteristics of wide emission spectrum band, adjustable spectrum, low cost and the like, and the light-emitting device is good in sealing performance and compact in size.

Description

technical field [0001] The invention belongs to the technical field of infrared luminescent materials, specifically relates to a near-infrared luminescent material, and further discloses a preparation method thereof and a luminescent device using the luminescent material. Background technique [0002] Near-infrared light can be widely used in security monitoring, food detection, biometric identification and other fields. With the development of miniaturization and hand-held electronic products, compact near-infrared light-emitting devices have attracted much attention. Traditional near-infrared light is mainly obtained through halogen tungsten lamps and near-infrared chips. The principle of near-infrared light emission of halogen tungsten lamps is to use the thermal radiation of tungsten wires at high temperatures. Due to low efficiency, high power consumption, and large volume, etc. The reason cannot be applied to compact near-infrared light-emitting devices. Near-infrared...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78C09K11/63H01L33/50
CPCC09K11/7712C09K11/687H01L33/502
Inventor 吴劲频周强潘锡翔罗莉温禄叶信宇魏世超
Owner 江西离子型稀土工程技术研究有限公司
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