Preparation method of visible light absorption type upper conversion luminescent material

A luminescent material and absorbing technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problem of no up-conversion luminescent material research report and other problems, and achieve the effects of uniform size, uniform doping and low synthesis temperature

Inactive Publication Date: 2012-10-24
NORTHWEST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nano-TiO doped with rare earth has not been found so far 2 Related research reports on upconversion luminescent materials as host hosts

Method used

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  • Preparation method of visible light absorption type upper conversion luminescent material
  • Preparation method of visible light absorption type upper conversion luminescent material
  • Preparation method of visible light absorption type upper conversion luminescent material

Examples

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preparation example Construction

[0039] The preparation of solutions B and E can be carried out at the same time. After 6-7 hours, slowly add solution E to solution B dropwise, and then stir at room temperature for another 2 hours to obtain solution F;

[0040] Aging the solution F to obtain the sol, drying the sol in a vacuum drying oven at 50-100°C to obtain a xerogel, after grinding, and then calcining at 200-500°C for about 2 hours, the heating rate is 10°C / min, and finally Grinding to obtain up-conversion powder luminescent material.

[0041] The present invention can also prepare up-conversion thin-film luminescent materials, and the specific method is as follows: the sol obtained in step 6 is used as a substrate with pre-treated clean glass or silicon wafers, and a film is formed by dipping and pulling method or spin coating method, and the thickness of the film is It can be adjusted by adjusting the pulling speed and the number of pulling times or the speed of the glue homogenizer; the wet film is dried...

Embodiment 1

[0043] Embodiment 1: Preparation Y 2 o 3 :Er 3+ +TiO 2 up-conversion luminescent material

[0044] The raw materials used are as follows:

[0045]

[0046]

[0047] refer to figure 2 As shown, the preparation process of this embodiment is as follows:

[0048] 1) Add 7.4ml of n-butanol to 6.8ml of tetra-n-butyl titanate, mix and stir for 0.5 hours to obtain solution A1;

[0049] 2) Slowly drop 4.6ml of glacial acetic acid into solution A1, stir at room temperature for 6 hours to obtain solution B1, and continue stirring;

[0050] 3) Add 1.8mol of diethanolamine to solution B1 as a catalyst, and continue stirring;

[0051] 4) Weigh 0.7527g of yttrium oxide and 0.2532g of erbium oxide into a beaker, add 9.0ml of nitric acid, shake the beaker to obtain a turbid solution, stir the turbid solution at 100°C for 0.5 hour until the solution is complete, and obtain a clear nitric acid solution as C1, put the solution C1 at room temperature to cool;

[0052] 5) Stir the s...

Embodiment 2

[0056] Embodiment 2: Preparation of NaYF 4 :Er 3+ +TiO 2 up-conversion luminescent material

[0057] The raw materials used are as follows:

[0058]

[0059]

[0060] refer to image 3 , the preparation process of the present embodiment is as follows:

[0061] 1) Add 7.4ml of n-butanol to 6.4ml of tetra-n-butyl titanate, mix and stir for 0.5 hours to obtain solution A2;

[0062] 2) slowly drop 4.6ml of glacial acetic acid into solution A2 to obtain solution B2, and continue stirring;

[0063] 3) Add 6.8 mol of diethanolamine as a catalyst to solution B2, and stir for 6 hours;

[0064] 4a) Weigh 0.7529g of yttrium oxide and 0.3072g of erbium oxide into a beaker, add 9.0ml of nitric acid, shake the beaker to obtain a turbid solution, stir the turbid solution at 100°C for 0.5 hours, and obtain a clear nitric acid solution as C2. C2 is cooled at room temperature;

[0065] 4b) 1.120g of sodium fluoride was dissolved in 19ml of distilled water to obtain solution D2;

...

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Abstract

The invention provides a preparation method of a visible light absorption type upper conversion luminescent material, which comprises the following steps: mixing N-butyl titanate and absolute ethyl alcohol or normal butanol for obtaining a solution A; continuously stirring the solution for 30 minutes; slowly dripping glacial acetic acid or ethanol or ethanol acetic acid or propanol acetic acid inthe solution A; stirring the mixture at the room temperature to obtain a solution B; adding a proper amount of diethanolameine to be used as catalysts; stirring the materials for a period; dissolvingone or two kinds of materials of yttrium oxide and rare earth compounds in nitric acid to obtain turbid liquid; stirring the turbid liquid to obtain a transparent clarified solution C; placing the transparent clarified solution C at the room temperature to be cooled; slowly dripping the solution C into the solution B which is stirred at a high speed to obtain a mixed solution G; continuously stirring the solution G for two hours; pouring the solution G into a culture dish for stilling standing and ageing for obtaining stable, uniform and transparent rose pink sol; and obtaining the upper conversion luminescent material through drying, grinding and calcining the sol.

Description

technical field [0001] The invention relates to the technical field of synthesis of rare earth luminescent materials, in particular to a preparation method of a rare earth doped up-conversion luminescent material that uses visible light as an excitation source and emits deep ultraviolet, ultraviolet and blue light. Background technique [0002] Rare earth ion-doped up-conversion luminescent materials have always been a hot topic in the field of rare earth luminescent materials. It has broad application prospects in optical storage, optical communication systems, night vision systems, biomarkers, three-dimensional displays and sensors. Rare-earth up-conversion luminescent materials are attracting attention because of the difficulty in preparing such materials and the variety of them. Among them, fluoride is a good upconversion matrix material due to its low phonon energy and strong solubility to rare earth ions, but due to the toxicity, corrosion, and poor chemical and mechan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/78C09K11/85
Inventor 胡晓云叶岩溪刘恩周樊君
Owner NORTHWEST UNIV
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