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Yb-doped transparent light-emitting film and preparation method thereof

A light-emitting film and transparent technology, applied in the field of materials, can solve the problems of unfavorable large-scale production, expensive equipment, complicated preparation process, etc., and achieve the effect of uniform and dense surface, high transmittance, and suitable viscosity

Active Publication Date: 2021-10-08
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation methods of rare earth doped thin films include pulsed laser deposition, magnetron sputtering, chemical vapor deposition and sol-gel spin coating, etc. The first three preparation methods require expensive equipment and complicated preparation processes, which are not conducive to large-scale Production

Method used

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  • Yb-doped transparent light-emitting film and preparation method thereof
  • Yb-doped transparent light-emitting film and preparation method thereof
  • Yb-doped transparent light-emitting film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1#10mol%YbO 1.5 -15mol%AlO 1.5 -75SiO2 2 mol%

[0031] This example is the preparation process of a transparent luminescent film with a Yb doping concentration of 10% prepared on a pure quartz substrate, and the test results of its transmission spectrum, emission spectrum and ellipsometry.

[0032] 1. Preparation of Yb highly doped sol precursor. Dissolve ytterbium nitrate pentahydrate and aluminum nitrate nonahydrate in ethanol and deionized water, the molar ratio of deionized water and ethanol is 1:1~1:2, and stir at 30°C for 30 minutes to completely dissolve ytterbium nitrate pentahydrate and aluminum nitrate nonahydrate. Then add ethyl orthosilicate, the molar ratio of ethyl orthosilicate and ethanol is 1:4~1:8, continue stirring at 30°C for 20 hours. A colorless, clear and transparent solution was obtained. The solution was airtightly aged at 10° C. for 72 hours, and filtered to obtain a Yb highly doped sol precursor. The obtained sol has suitable v...

Embodiment 2

[0036] Example 2#15mol%YbO 1.5 -14mol% AlO 1.5 -71mol% SiO 2

[0037] This example is the preparation process of a transparent luminescent film with a Yb doping concentration of 15% prepared on a pure quartz substrate, and the test results of its emission spectrum and transmission spectrum.

[0038] 1. Preparation of Yb highly doped sol precursor. Dissolve ytterbium nitrate pentahydrate and aluminum nitrate nonahydrate in ethanol and deionized water, the molar ratio of deionized water and ethanol is 1:1~1:2, and stir at 20°C for 60 minutes to completely dissolve ytterbium nitrate pentahydrate and aluminum nitrate nonahydrate. Then add ethyl orthosilicate, the molar ratio of ethyl orthosilicate and ethanol is 1:4~1:8, continue stirring at 20°C for 20 hours. A colorless, clear and transparent solution was obtained. The solution was airtightly aged at 30° C. for 48 hours, and filtered to obtain a Yb highly doped sol precursor. The resulting sol has a suitable viscosity for...

Embodiment 3

[0042] Embodiment 3#30mol%YbO 1.5 -12mol% AlO 1.5 -58mol% SiO 2

[0043] This example is the preparation process of a transparent luminescent film with a Yb doping concentration of 30% on a pure quartz substrate, and its emission spectrum, transmission spectrum and thickness test results.

[0044] 1. Preparation of Yb highly doped sol precursor. Dissolve ytterbium nitrate pentahydrate and aluminum nitrate nonahydrate in ethanol and deionized water, the molar ratio of deionized water and ethanol is 1:1~1:2, and stir at 40°C for 30 minutes to completely dissolve ytterbium nitrate pentahydrate and aluminum nitrate nonahydrate. Then add ethyl orthosilicate, the molar ratio of ethyl orthosilicate to ethanol is 1:4~1:8 and continue stirring at 40°C for 20 hours. A colorless, clear and transparent solution was obtained. The solution was airtightly aged at 40° C. for 24 hours, and filtered to obtain a Yb highly doped sol precursor. The obtained sol has suitable viscosity for sp...

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Abstract

The invention discloses a highly Yb-doped transparent luminescent film and a preparation method thereof. The composition and mole percentage of the film provided by the invention are: 10%~30%YbO 1.5 , 12% ~ 15% AlO 1.5 , 58% ~ 75% SiO 2 , the sum of the mole percentages of each component is 100%. The preparation method steps of the thin film provided by the invention are as follows: 1) preparation of a Yb highly doped sol precursor; 2) substrate cleaning pretreatment; 3) preparation of a Yb highly doped transparent luminescent thin film. The thin film provided by the invention is clear and transparent, the transmittance in the 360nm to 2000nm band is over 80%, and has relatively stable luminous performance and strong luminous intensity.

Description

technical field [0001] The invention relates to a Yb-doped transparent luminescent film and a preparation method thereof, belonging to the field of materials. Background technique [0002] Laser technology is widely used in industry and science and technology. In recent years, the rapid development of laser technology has promoted the unprecedented progress of optical thin films. Different laser systems have various performance requirements for thin film components, such as: transmittance, reflectivity in a specific wavelength range, and low film stress. Yb is an important rare earth element, and the advantage of Yb-doped active media is that Yb 3+ The energy level structure of ions is simple, the energy storage effect is good, the fluorescence lifetime is long, there is no excited state absorption, and it is not easy to produce concentration quenching effect, so that high concentration doping can be realized. At present, the preparation methods of rare earth doped thin fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/25
Inventor 夏丽斯于春雷王璠邵冲云胡丽丽
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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