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Rare-earth doped tantalic acid salt transparent luminous thin-film and preparation thereof

A technology of light-emitting thin film and rare earth doping, which is applied in light-emitting materials, chemical instruments and methods, etc., can solve the problems that are not involved in the field of thin-film light-emitting, and achieve the effects of speeding up the preparation cycle, avoiding the protective atmosphere, and controlling the structure.

Inactive Publication Date: 2005-05-11
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the sol-gel preparation of tantalate thin films has been reported, it is limited to the study of piezoelectric and photoelectric properties of thin films, and has not yet involved the field of light emission of thin films.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Gd 0.9 TaO 4 :Eu 0.1 preparation of

[0015] At room temperature, 2 ml of concentrated HNO 3 Add 30ml of absolute ethanol, then add 0.9mmol of Gd 2 o 3 and 0.1 mmol of doped ion oxide Eu 2 o 3 Add it to the ethanol solution, heat and stir at 79°C to dissolve the oxide. Dissolve 2 mmol of TaCl in 20 ml of ethanol 5 , and added to the above clear solution, stirred and refluxed for 3 hours, added 1ml polyethylene glycol 200, and then continued to reflux for 1 hour. Finally, it was naturally cooled to room temperature, and after aging for 8 hours, the required sol for coating was obtained. Choose clean quartz or optical glass as the substrate, and use the method of spin coating to coat the film. The film thickness can be adjusted by changing the rotation speed. The spin-coated wet gel film is quickly placed in an infrared oven for thermal decomposition pretreatment for 2 to 5 minutes, and then the dry gel film is subjected to ultraviolet light strengthening treatm...

Embodiment 2

[0017] Gd 0.95 TaO 4 :Tb 0.05 preparation of

[0018] At room temperature, 4 ml of concentrated HNO 3 Add 30ml of absolute ethanol, then add 0.95mmol of Gd 2 o 3 and 0.025 mmol of doped ion oxide Tb 4 o 7 Add it to the ethanol solution, heat and stir at 79°C to dissolve the oxide. Dissolve 2 mmol of TaCl in 20 ml of ethanol 5 , and added to the above clear solution, stirred and refluxed for 3 hours, added 1ml polyethylene glycol 200, and then continued to reflux for 1 hour. Finally, it was naturally cooled to room temperature, and after aging for 8 hours, the required sol for coating was obtained. Choose clean quartz or optical glass as the substrate, and use the method of spin coating to coat the film. The film thickness can be adjusted by changing the rotation speed. The spin-coated wet gel film is quickly placed in an infrared oven for thermal decomposition pretreatment for 2 to 5 minutes, and then the dry gel film is subjected to ultraviolet light strengthening t...

Embodiment 3

[0020] Lu 0.9 TaO 4 :Eu 0.1 preparation of

[0021] At room temperature, 2 ml of concentrated HNO 3 Add 30ml of absolute ethanol, then add 0.9mmol of Lu 2 o 3 and 0.1 mmol of doped ion oxide Eu 2 o 3 Add it to the ethanol solution, heat and stir at 79°C to dissolve the oxide. Dissolve 2 mmol of TaCl in 20 ml of ethanol 5, and added to the above clear solution, stirred and refluxed for 3 hours, added 1ml polyethylene glycol 200, and then continued to reflux for 1 hour. Finally, it was naturally cooled to room temperature, and after aging for 8 hours, the required sol for coating was obtained. Process is with embodiment 1. The surface of the film is uniform, dense and free of cracks, and has good adhesion to the substrate. Under the irradiation of ultraviolet light or X-rays, the film glows red.

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PUM

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Abstract

The invention relates to a transparent-shining film of rare-earth choleric acid salt and its production method. The chemical formula is (Ln1-xREx)TaO4(0<x<0.1); Ln=Gd,Lu; RE=Eu,Tb. The process is low cost, simple, and convenience. The film is of transparent, compact and good adhesion. It simplifies conditions of experiment and shortens preparation period. It can be used for the microradiology imaging screen of high space resolution factor and screen of high resolution factor cathode-ray, field emission, plasma display.

Description

technical field [0001] The invention relates to a luminescent film and a preparation method thereof, in particular to a rare earth-doped tantalate transparent luminescent film and a preparation method thereof. Background technique [0002] Luminescent film is an important functional material. Compared with the display screen made of traditional luminescent powder, luminescent film shows its superiority in contrast, heat conduction, uniformity, and adhesion to the substrate. In recent years, with the development of X-ray microscopic imaging technology, the spatial resolution of X-ray CCDs can only reach the order of tens of microns due to the influence of scattering of phosphor particles in X-ray luminescent films prepared by traditional phosphors. , restricting the further improvement of the spatial resolution of the X-ray CCD. Use transparent inorganic thin film scintillation material as the X-ray-visible light conversion medium, and match it with CCD to form a digital ima...

Claims

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Application Information

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IPC IPC(8): C09K11/00
Inventor 顾牡刘小林徐昕邱隆清张睿
Owner TONGJI UNIV
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