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Preparation method of Y0.95F3:0.05Tb<3+> nano particle fluorophor

A nanoparticle and phosphor technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of affecting luminous efficiency, uneven dispersion of luminous centers, etc., and achieve good luminous effect, stable luminescence, and the effect of emitting and refracting surface light.

Inactive Publication Date: 2018-11-06
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation of phosphors is mainly a high-temperature solid-phase method. Although the method is simple, due to the limitations of this traditional method, the luminescent centers are dispersed unevenly in the matrix, which affects its luminous efficiency.

Method used

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  • Preparation method of Y0.95F3:0.05Tb&lt;3+&gt; nano particle fluorophor
  • Preparation method of Y0.95F3:0.05Tb&lt;3+&gt; nano particle fluorophor
  • Preparation method of Y0.95F3:0.05Tb&lt;3+&gt; nano particle fluorophor

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Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1: a kind of Y 0.95 f 3 :0.05Tb 3+ Preparation of Nanoparticle Phosphors

[0026] Accurately weigh 47.8825gY (NO 3 ) 3 .6H 2 O is dissolved and diluted in a 500ml volumetric flask to make 0.25mol / L of Y(NO 3 ) 3 The solution is ready for use. 2.3365g Tb 4 o 7 0.25mol / L Tb(NO 3 ) 3 The solution is ready for use. Accurately pipette 19ml of 0.25mol / L Y(NO 3 ) 3 , 1000μl 0.25mol / L Tb(NO 3 ) 3 , plus 3.4848g (control RE 3+ :SDBS=1:2, where RE 3+ trivalent rare earth ion Tb 3+ and Y 3+ Add) sodium dodecylbenzenesulfonate (SDBS) in a 100ml small rubber beaker, then add a stir bar at a temperature of 22°C and stir on a magnetic stirrer for 55min, add 2.800g (2314μl) 1-butyl-3 -Methylimidazolium tetrafluoroborate, keep the temperature at 22°C, cover with plastic wrap (airtight), set the rotation speed at 100r / min and stir for 3h to obtain a mixed solution. The mixture was transferred to a 100ml polytetrafluoroethylene reaction kettle. The reactor...

Embodiment 2

[0027] Embodiment 2: the product that embodiment 1 is made is measured as follows

[0028] The product that embodiment 1 is made carries out XRD test:

[0029] The radiation source is Cu, the wavelength is 1.54060m, the scanning angle is 20°~80°, the voltage is 30kV, the current is 20mA, and the scanning speed is 2.4° / min. The XRD diffraction pattern of the X-ray nanoparticles is as follows: figure 1 shown. It can be seen from the figure that the XRD diffraction angle 2θ is 24.208±0.2°, 25.610±0.2°, 27.532±0.2°, 30.701±0.2°, 35.688±0.2°, 40.675±0.2°, 43.584±0.2°, 45.143±0.2°, There are emission peaks at 46.649±0.2°, 47.221±0.2°, 48.675±0.2°, 50.909±0.2°, 51.844±0.2°, 52.987±0.2°, 54.649±0.2°, etc.

[0030] The product obtained in embodiment 1 will be carried out electron microscope scanning, scanning result sees figure 2 .

[0031] Depend on figure 2 It can be seen that Y 0.95 f 3 :0.05Tb 3+ The product is a nano-material in which short rods are aggregated into a sea...

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Abstract

The invention relates to a preparation method of a Y0.95F3:0.05Tb<3+> nano particle fluorophor. The method comprises the steps of taking Y(NO3)3.6H2O, Tb4O7, 1-butyl-3-methylimidazole tetrafluoroborate, a surfactant and 2.5mol / L diluted nitric acid as raw materials, and performing solution preparation, prepared solution stirring, hydrothermal reaction, centrifugal washing, drying and the like. Thepreparation method of the Y0.95F3:0.05Tb<3+> nano particle fluorophor successfully achieves Tb doping; no toxic and harmful substances such as HF are generated in a preparation process; the method isenvironmentally friendly, and does not pollute an environment; a prepared product is high in luminous intensity and stable in luminescence; a finished product is in a short rod form, and is high in aggregation degree and uniform in dispersion; a luminous refracting surface is smooth; a luminous effect is good; the finished product is high in purity and yield; the yield is as high as 97.8%; the luminous stability is good; the luminous intensity after placement for 3 months almost has no change as compared with that on day 0; the preparation raw materials are simple, easy to obtain and low in price; and the method is worthy of market popularization and application.

Description

technical field [0001] The present invention relates to a Y 0.95 f 3 :0.05Tb 3+ Preparation method of nanoparticle phosphor. Background technique [0002] due to Tb 3+ Ions have characteristic green emission, so the synthesis of green powders of different systems around terbium has always been a topic of interest. in Tb 3+ A series of compounds with ions as activators, such as rare earth oxides, rare earth sulfides, aluminates, sulfates, phosphates, etc., can emit green light under the excitation of ultraviolet light. In trichromatic phosphors, Tb 3+ 、Ce 3+ The activated oxo acid salt is a green fluorescent powder, and the green powder has the largest luminous flux to the lamp. The green powder for the three primary color lamps is Tb 3+ As an activator, Tb 3+ The maximum emission peak at 545nm is attributed to Tb 3+ of 5 D. 4 → 7 f 5 jump. [0003] At present, the most widely used aluminate green powder has disadvantages such as high firing temperature, long ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/85
CPCC09K11/7772
Inventor 曹仕秀唐银银韩涛彭玲玲
Owner CHONGQING UNIV OF ARTS & SCI
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