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Erbium-doped lanthanum titanate fluorescent compound and its preparation method and application

A fluorescent compound, lanthanum titanate technology, applied in the field of fluorescent compounds

Active Publication Date: 2017-01-25
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

LaTiO 5 A report on the preparation of upconversion fluorescent materials for substrates

Method used

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  • Erbium-doped lanthanum titanate fluorescent compound and its preparation method and application
  • Erbium-doped lanthanum titanate fluorescent compound and its preparation method and application
  • Erbium-doped lanthanum titanate fluorescent compound and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0054] A fluorescent compound of erbium-doped lanthanum titanate with the chemical formula La 1.99 Er 0.01 TiO 5 , made by the following steps:

[0055] (1) Weigh 1.99mmol La soluble salt and 0.01mmol Er soluble salt and dissolve them in deionized water to obtain solution A; dissolve 1mmol tetrabutyl titanate in 50mL methanol to obtain solution B; wherein, La soluble salt is nitric acid Salt, the soluble salt of Er is acetate;

[0056] (2) Mix solution A and solution B, add 10 mmol of nitric acid dropwise while stirring, and stir for 1.5 hours to obtain a clear solution C, raise the temperature of solution C to 60° C., and keep it warm in a water bath for 6 hours to obtain a precursor gel;

[0057] (3) Put the precursor gel in a corundum crucible and calcinate in a muffle furnace. The calcining temperature is 1100°C in an air atmosphere, the calcining time is 4 hours, and the holding time is 1 hour. Cool to room temperature with the furnace to obtain a calcined product ; ...

Embodiment 2

[0060] A fluorescent compound of erbium-doped lanthanum titanate with the chemical formula La 1.98 Er 0.02 TiO 5 , made by the following steps:

[0061] (1) Weigh 1.98mmol La soluble salt and 0.02mmol Er soluble salt and dissolve them in deionized water to obtain solution A; dissolve 1mmol tetrabutyl titanate in 100mL ethanol to obtain solution B; wherein, La soluble salt is vinegar Salt, the soluble salt of Er is carbonate;

[0062] (2) Mix solution A and solution B, add 30 mmol of carbonic acid dropwise while stirring, and stir for 1 hour to obtain a clear solution C, raise the temperature of solution C to 80° C., and keep it warm in a water bath for 3 hours to obtain a precursor gel;

[0063] (3) Put the precursor gel in a corundum crucible and calcinate in a muffle furnace. The calcining temperature is 1000°C in an air atmosphere, the calcining time is 3 hours, and the holding time is 4 hours. Cool to room temperature with the furnace to obtain a calcined product ;

...

Embodiment 3

[0066] A fluorescent compound of erbium-doped lanthanum titanate with the chemical formula La 1.92 Er 0.08 TiO 5 , made by the following steps:

[0067] (1) Dissolve 3.84mmol La soluble salt and 0.16mmol Er soluble salt in deionized water to obtain solution A; dissolve 2mmol tetrabutyl titanate in 100mL propanol to obtain solution B; wherein, the soluble salt of La is Carbonate, the soluble salt of Er is nitrate;

[0068] (2) Mix solution A and solution B, add 50 mmol of acetic acid dropwise while stirring, and stir for 5 hours to obtain a clear solution C, then raise the temperature of solution C to 70°C, keep it in a water bath for 6 hours, and obtain a precursor gel;

[0069] (3) Put the precursor gel in a corundum crucible and calcinate in a muffle furnace. The calcining temperature is 900°C in an air atmosphere, the calcining time is 6 hours, and the holding time is 1 hour. Cool to room temperature with the furnace to obtain a calcined product ;

[0070] (4) The calc...

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Abstract

The invention discloses a fluorescent compound doped with erbium lanthanum titanate. Its general formula is La2(1-x)Er2xTiO5, 0.005≤x≤0.07. The preparation method includes the following steps: dissolving La soluble salt and Er soluble salt. In deionized water, solution A is obtained; solution B is obtained by mixing tetrabutyl titanate and alcohol; solution A and solution B are mixed, acid is added dropwise and stirred to obtain solution C, and solution C is heated to 50°C to 150°C and kept warm to obtain Precursor gel; calcining the precursor gel; crushing, grinding, washing and drying the calcined product. The fluorescent compound of the present invention can be an up-conversion fluorescent compound or a down-conversion fluorescent compound. It has stable chemical properties and can be excited by ultraviolet light or infrared light to obtain higher luminous intensity. It can be used in up-conversion fluorescent materials or down-conversion fluorescent materials. The present invention The preparation method has simple process and low cost.

Description

technical field [0001] The invention relates to a fluorescent compound of erbium-doped lanthanum titanate, a preparation method and application thereof, and belongs to the technical field of fluorescent compounds. Background technique [0002] Up-conversion (Up-conversion) luminescence refers to the phenomenon of converting long-wave radiation with lower energy into short-wave radiation with higher energy through a two-photon or multi-photon process. Rare earth-doped upconversion fluorescent materials have potential applications in lighting and display, bioluminescence labeling, solar cells, optical temperature sensing, etc. [0003] In the process of upconversion luminescence, the host material is the main factor affecting the properties of upconversion luminescence. In addition to the crucial role of the phonon energy of the host for the upconversion luminescence, the selection of the host lattice also determines the distance between dopant ions, the distribution of spati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/78
Inventor 郭瑞齐建全陈霞张扬张晓雷方圆刘宣文
Owner NORTHEASTERN UNIV LIAONING
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