Trivalent chromium ion doped fluoroantimonate near-infrared fluorescent material, preparation method and LED light source of trivalent chromium ion doped fluoroantimonate near-infrared fluorescent material

A technology of LED light source and fluoroantimonate, applied in luminescent materials, chemical instruments and methods, semiconductor devices, etc., can solve the problems of insufficient emission spectral band, low output power, low photoelectric conversion efficiency, etc. High yield and low cost effect

Pending Publication Date: 2022-07-29
FOSHAN UNIVERSITY
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  • Claims
  • Application Information

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Problems solved by technology

At present, the broadband near-infrared pc-LED technology is in its infancy, the photoelectric conversion efficiency is low, the output power is small, and the emission spectral band is not wide enough to meet the wide application of near-infrared. The development of efficient broadband near-infrared fluorescent materials is the solution to the above problems. key

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  • Trivalent chromium ion doped fluoroantimonate near-infrared fluorescent material, preparation method and LED light source of trivalent chromium ion doped fluoroantimonate near-infrared fluorescent material
  • Trivalent chromium ion doped fluoroantimonate near-infrared fluorescent material, preparation method and LED light source of trivalent chromium ion doped fluoroantimonate near-infrared fluorescent material
  • Trivalent chromium ion doped fluoroantimonate near-infrared fluorescent material, preparation method and LED light source of trivalent chromium ion doped fluoroantimonate near-infrared fluorescent material

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preparation example Construction

[0031] In order to solve the above technical problems, the present invention provides a trivalent chromium ion (Cr 3+ ) The preparation method of the near-infrared fluorescent material doped with fluoroantimonate, comprising the following steps:

[0032] S1. Dissolve the Sb source and the Cr source in the HF solution, stir until dissolved, then add the Na source, and continue to stir to form a mixed solution;

[0033] S2, the mixed solution is loaded into the reaction equipment for reaction, and Cr is obtained after washing and drying 3+ Doped fluoroantimonate near-infrared fluorescent material;

[0034] the Cr 3+ The chemical composition of the near-infrared fluorescent material doped with fluoroantimonate is: NaSbF 4 : xCr 3+ , x=0.5~5%.

[0035] ABCF in the prior art 6: xCr 3+ is the more common Cr 3+ A doped near-infrared fluorescent material, wherein A represents an alkali metal, B represents an alkaline earth metal, and C represents an element of the third main g...

Embodiment 1

[0048] a Cr 3+ Preparation method of doped fluoroantimonate near-infrared fluorescent material:

[0049] 0.024g Cr (NO 3 ) 9H 2 O, 1.74g Sb 2 O 3 Dissolve in 3mL of HF solution with a mass concentration of 49wt%, stir until completely dissolved, and then add 0.4199g NaHF 2 , continue to stir for 30min, transfer to the autoclave and react at 220°C for 10h, after cooling to room temperature, centrifugal washing with deionized water twice, then centrifugal washing once with absolute ethanol, filter, drying at 70°C for 8 hours, get NaSbF 4 : 0.5%Cr 3+ .

Embodiment 2

[0051] a Cr 3+ Preparation method of doped fluoroantimonate near-infrared fluorescent material:

[0052] 0.024g Cr (NO 3 ) 9H 2 O, 1.74g Sb 2 O 3 Dissolve in 3mL of HF solution with a mass concentration of 20wt%, stir until completely dissolved, then add 0.4199g NaF, continue to stir for 30min, transfer to an autoclave and react at 200°C for 10h, cool to room temperature, use deionized water Centrifuged and washed twice, then centrifuged and washed once with absolute ethanol, filtered, and dried at 80°C for 8 hours to obtain NaSbF 4 : 0.5%Cr 3+ .

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Abstract

The invention discloses a trivalent chromium ion doped fluoroantimonate near-infrared fluorescent material and a preparation method thereof, and the preparation method comprises the following steps: dissolving a Sb source and a Cr source in an HF solution, stirring until the Sb source and the Cr source are dissolved, then adding a Na source, and continuously stirring to form a mixed solution; loading the mixed solution into reaction equipment for reaction, and washing and drying to obtain the Cr < 3 + > doped fluoroantimonate near-infrared fluorescent material, the chemical composition of the Cr < 3 + > doped fluoroantimonate near-infrared fluorescent material is NaSbF4: xCr < 3 + >, wherein x is equal to 0.5-5%. The Cr < 3 + >-doped fluoroantimonate near-infrared fluorescent material provided by the invention is high in fluorescence quantum efficiency and absorption efficiency, simple in preparation method and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of luminescent materials, in particular to a near-infrared fluorescent material doped with trivalent chromium ions of fluoroantimonate, a preparation method and an LED light source thereof. Background technique [0002] Near-infrared spectroscopy has different scattering spectral shapes and intensities for substances, and can be widely used in biomedical imaging, food detection and night vision imaging. At present, commercial near-infrared light sources mainly include tungsten halogen lamps, near-infrared LEDs and infrared lasers. However, the emission spectrum of traditional tungsten halogens is wide, but there are disadvantages such as large size, slow response, low efficiency, short lifetime, and a large amount of visible light in the spectrum. Near-infrared LEDs and infrared lasers have the characteristics of small size and high efficiency, but their emission spectrum is narrow, the emission wavelength ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/75H01L33/50
CPCC09K11/758H01L33/502
Inventor 邓婷婷张学亮陈孔岚陈姜毅禹庭周容富袁健肖鹏
Owner FOSHAN UNIVERSITY
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