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Up-conversion nano luminescent material with perovskite structure as well as preparation method and application thereof

A technology of nano-luminescent material and perovskite structure, which is applied in the fields of luminescent materials, nano-optics, nano-technology, etc., can solve the problems of difficulty in obtaining small-sized particles and cannot be widely used, and achieve small particle size and regular morphology. , the effect of stable performance

Pending Publication Date: 2020-06-09
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the upconversion luminescence intensity of fluoride materials studied in recent years is very high, it is difficult to obtain small-sized particles, so they cannot be widely used in biology and other fields that require small sizes.

Method used

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  • Up-conversion nano luminescent material with perovskite structure as well as preparation method and application thereof
  • Up-conversion nano luminescent material with perovskite structure as well as preparation method and application thereof
  • Up-conversion nano luminescent material with perovskite structure as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031]Up-conversion nano-luminescent material: CsPb 0.999625 Yb 0.0003 Er 0.000075 Br 3 quantum dots;

[0032] Weigh 0.0614gCs 2 CO 3 To a 50ml three-necked flask, add 2ml oleic acid, 8ml octadecene, in N 2 Heat to 120°C under atmosphere and keep for 1h; continue heating to 150°C and keep for 10min until Cs 2 CO 3 Completely dissolved, the light yellow clear liquid is the precursor of the prepared cesium oleate.

[0033] According to the chemical formula CsPb 0.999625 Yb 0.0003 Er 0.000075 Br 3 The stoichiometric ratio of each element in , respectively weighed 0.1163gYbCl 3· 6H 2 O, 0.0280g ErCl 3· 6H 2 O and 0.0690gPbBr 2 , into a 100ml three-necked flask; then add 5ml oleic acid, 3ml oleylamine, and 20ml octadecene into the three-necked flask; under nitrogen protection, heat the solution to 160°C for 4 hours; then continue heating to 240°C ; The cesium oleate preheated to 100 ℃ was quickly injected into the three-necked flask, and after 10s, the ice bath was...

Embodiment 2

[0039] CaPb 0.999625 Yb 0.0003 Er 0.000075 Br 3 Preparation of nanocubes

[0040] Weigh 0.0614gCs 2 CO 3 To a 50ml three-necked flask, add 2ml oleic acid, 8ml octadecene, in N 2 Heat to 120°C under atmosphere and keep for 1h; continue heating to 150°C and keep for 10min until Cs 2 CO 3 Completely dissolved, the light yellow clear liquid is the precursor of the prepared cesium oleate.

[0041] According to the chemical formula CsPb 0.999625 Yb 0.0003 Er 0.000075 Br 3 The stoichiometric ratio of each element in , respectively weighed 0.1163gYbCl 3. 6H 2 O, 0.0280g ErCl 3. 6H 2 O and 0.0690gPbBr 2 , into a 100ml three-necked flask; then add 5ml oleic acid, 3ml oleylamine, and 20ml octadecene into the three-necked flask; under nitrogen protection, heat the solution to 95°C and keep it for 2h; then continue heating to 120°C , maintained for 10 minutes, cooled to 55°C, quickly injected cesium oleate preheated to 100°C into the three-necked flask, and cooled to room ...

Embodiment 3

[0045] CaPb 0.9997195 Yb 0.0002244 Er 0.0000561 Br 3 Preparation of nanoribbons

[0046] Weigh 0.0614gCs 2 CO 3 To a 50ml three-necked flask, add 2ml oleic acid, 8ml octadecene, in N 2 Heat to 120°C under atmosphere and keep for 1h; continue heating to 150°C and keep for 10min until Cs 2 CO 3 Completely dissolved, the light yellow clear liquid is the precursor of the prepared cesium oleate.

[0047] According to the chemical formula CsPb 0.9997195 Yb 0.0002244 Er 0.0000561 Br 3 The stoichiometric ratio of each element, respectively weighed 0.0869g YbCl 3. 6H 2 O, 0.0214g ErCl 3. 6H 2 O and 0.0690gPbBr 2 , into a 100ml three-necked flask; then add 5ml oleic acid, 3ml oleylamine, and 20ml octadecene into the three-necked flask; under nitrogen protection, heat the solution to 180°C and keep it for 6h; then continue heating to 260°C ; The cesium oleate preheated to 100 ℃ was quickly injected into the three-necked flask, and after 10s, the ice bath was cooled to ro...

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Abstract

The invention relates to the field of luminescent materials, in particular to an up-conversion nano luminescent material with a perovskite structure as well as a preparation method and application thereof. The up-conversion nano luminescent material is of a rare earth doped halogen perovskite (CsPbBr3) nano structure and has the following chemical general formula: AB<1-y-z>M<y>N<z>X3, wherein A =Cs, B = Pb, M = Yb, N = Er, X = Br, and y and z satisfy the following condition: 0.000188 <= y + z <= 0.000375. The material is stable in performance and regular in morphology, and the particle size is obviously smaller than that of an up-conversion luminescent material of a fluoride substrate synthesized under the same condition. Compared with the luminescence of a CsPbBr3 substrate, the up-conversion luminescence of the material has the advantages of low excitation energy, large penetration depth, small biological damage and the like, so that the application of the perovskite material in thebiological aspect can be realized.

Description

technical field [0001] The invention relates to the field of luminescent materials, in particular to an up-conversion nano-luminescent material with a perovskite structure and a preparation method and application thereof. Background technique [0002] The up-conversion luminescence of rare earth ions refers to the phenomenon that when a sample doped with rare earth ions is irradiated with excitation light with a longer wavelength, light with a wavelength shorter than that of the excitation light is emitted. Up-conversion luminescent materials have broad application prospects in data storage and transmission, light display, infrared detection, fluorescent anti-counterfeiting, fluorescent probes, biosensors, bioimaging, solar cells and other fields. Compared with traditional down-conversion fluorescent materials, up-conversion materials have many advantages, such as high photostability, low background fluorescence, high color purity and long lifetime. [0003] Since CsPbBr 3...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/85B82Y20/00B82Y40/00C01G21/00
CPCC09K11/7773B82Y20/00B82Y40/00C01G21/006C01P2004/30C01P2004/16C01P2004/17C01P2004/38C01P2006/60C01P2002/72C01P2004/04
Inventor 陈力高远齐春雨李静彭亚茹
Owner CHANGCHUN UNIV OF TECH
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