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Near-infrared light-emitting material and light-emitting device containing light-emitting material

A technology of light-emitting materials and light-emitting devices, applied in the directions of light-emitting materials, semiconductor devices, chemical instruments and methods, etc., can solve the problems of inability to achieve broad spectrum or multi-spectrum and adjustable, high technical difficulties, poor stability, etc., and achieve a wide range of applications. , The spectrum is adjustable and controllable, avoiding the effect of high cost

Active Publication Date: 2020-03-03
GRIREM ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The second technical problem to be solved by the present invention is to provide a light-emitting device containing the near-infrared light-emitting material, which can realize the emission of broad-spectrum or multi-spectrum near-infrared light under the excitation of blue light, ultraviolet light, and red light. It solves the problems of poor stability, high technical difficulties, and the inability to realize wide-spectrum or multi-spectrum and adjustability of existing near-infrared light-emitting devices

Method used

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  • Near-infrared light-emitting material and light-emitting device containing light-emitting material
  • Near-infrared light-emitting material and light-emitting device containing light-emitting material
  • Near-infrared light-emitting material and light-emitting device containing light-emitting material

Examples

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Embodiment 1

[0036] The near-infrared luminescent material described in this embodiment comprises a compound whose composition formula is LaSc 2.9 (B 0.85 Ga 0.15 o 3 ) 4 : 0.1Cr.

[0037] According to the chemical formula LaSc 2.9 (B 0.85 Ga 0.15 o 3 ) 4 : 0.1Cr stoichiometric ratio, accurately weighed La 2 o 3 、Sc 2 o 3 , B 2 o 3 , Ga 2 o 3 and Cr 2 o 3 Mix to obtain a mixture; after the mixture is ground and mixed, it is calcined at 1300°C for 5 hours in an air atmosphere, and the roasted product is obtained after cooling down; the obtained roasted product is subjected to post-processing such as crushing, grinding, grading, and sieve washing, that is, Near-infrared phosphors are available.

[0038] The obtained near-infrared phosphor sample was subjected to an excitation test, and the excitation and emission spectra of the sample were obtained as attached figure 1 shown.

Embodiment 2

[0040] The near-infrared luminescent material described in this embodiment comprises a compound whose composition formula is LaSc 1.9999 Lu(B 0.85 Ga 0.15 o 3 ) 4 : 0.0001Cr.

[0041] According to the chemical formula LaSc 1.9999 Lu(B 0.85 Ga 0.15 o 3 ) 4 : 0.0001Cr stoichiometric ratio, accurately weighed La 2 o 3 、Sc 2 o 3 、Lu 2 o 3 , B 2 o 3 , Ga 2 o 3 and Cr 2 o 3 Mixing to obtain a mixture; mixing according to a selected stoichiometric ratio, adding a flux, growing a seed crystal by a molten salt method, and growing a transparent crystal by using a pulling method using the seed crystal.

Embodiment 3

[0043] The near-infrared luminescent material described in this embodiment comprises a compound whose composition formula is LaSc 2.999 (BO 3 ) 4 : 0.001Cr.

[0044] According to the chemical formula LaSc 2.999 (BO 3 ) 4 : 0.001Cr stoichiometric ratio, accurately weighed La 2 o 3 、Sc 2 o 3 , B 2 o 3 and Cr 2 o 3 Mix to obtain a mixture; after the mixture is ground and mixed, it is calcined at 1300°C for 5 hours in an air atmosphere, and the roasted product is obtained after cooling down; the obtained roasted product is subjected to post-processing such as crushing, grinding, grading, and sieve washing, that is, Near-infrared phosphors are available.

[0045] For the near-infrared luminescent material described in Examples 4-18 and the luminescent device containing the luminescent material, the composition formulas of the compounds are listed in Table 1 below. The preparation method of the material in each example is the same as in Example 1 or 2, except that Acco...

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Abstract

The invention belongs to the technical field of near-infrared light-emitting materials, particularly relates to a near-infrared light-emitting material, and further discloses a preparation method of the near-infrared light-emitting material and a light-emitting device containing the light-emitting material, wherein the near-infrared light-emitting material comprises an inorganic compound with a composition of MaAb(QO3)c:zZ, the excitation wavelength of the compound is 350-750nm, the emission main peak of the near-infrared region is broadband or multispectral emission at 700-1700 nm, the excitation wavelength is broad, and the compound can well absorb ultraviolet light, blue light and red light, has broadband or multispectral emission (700-1700 nm) in a near-infrared region, is adjustable and controllable in spectral range, has wide or more spectral line emission compared with red light with a peak wavelength of 700-1700 nm and near-infrared chips, and has wider application.

Description

technical field [0001] The invention belongs to the technical field of near-infrared luminescent materials, specifically relates to a near-infrared luminescent material, and further discloses a preparation method thereof and a luminescent device containing the luminescent material. Background technique [0002] With the rise and rapid development of modern Internet of Things, biometrics, wearable devices, food / medical testing and other fields, various sensors and image recognition technologies are becoming more and more important. Among these technologies, red light and near-infrared spectroscopy are widely used in petrochemical, polymer, pharmaceutical, clinical medicine, environmental science, textile industry, biological Identification, security monitoring, food / medical testing and other fields, and in view of the wide range of application characteristics of near-infrared LEDs, it has become an important auxiliary light source. [0003] Near-infrared LED, or near-infrare...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78C09K11/80H01L33/50
CPCC09K11/7776C09K11/778C09K11/7794H01L33/502H01L33/50
Inventor 刘元红刘荣辉陈晓霞马小乐李彦峰陈明月
Owner GRIREM ADVANCED MATERIALS CO LTD
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