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
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[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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