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Preparation method for sensitization-enhanced green light-emitting high-silica glass

The technology of high silica glass and borosilicate glass is applied in the field of preparation of sensitized and enhanced green light-emitting high silica glass, which can solve the problems of few light sources, harm to human body, and insufficient luminous intensity.

Active Publication Date: 2014-11-26
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

However, the existing problems are that the luminous intensity is still not high enough; the second is that its optimal excitation wavelength is about 245nm, and ultraviolet rays of this wavelength are obviously harmful to the human body, and there are few light sources to choose from. difficult to integrate

Method used

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  • Preparation method for sensitization-enhanced green light-emitting high-silica glass
  • Preparation method for sensitization-enhanced green light-emitting high-silica glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take analytically pure chemical reagents, according to SiO 2 63.72mol%, Na 2 CO 3 9.80 mol%, H 3 BO 3 The ratio of 26.48 mol % is used to prepare mixed raw materials. After mixing and grinding evenly, put it into a platinum crucible, and after melting at a high temperature of 1450°C for 40 minutes, cool it on an iron plate at 400°C to form borosilicate glass.

[0027] Put the borosilicate glass into a high-temperature furnace and heat-treat at 590° C. for 20 hours, and then cut it into glass pieces of 5 mm×5 mm×1 mm. Put the glass into a sealed autoclave, and place it at 98°C for three times of 24-hour acid treatment; for the first time, immerse it in a 1mol / L nitric acid solution at a ratio of 50ml acid solution / gram of glass, and for the second time Immerse in 1mol / L nitric acid solution at the ratio of 10ml acid solution / gram of glass, and immerse in 0.3mol / L nitric acid solution at the ratio of 10ml acid solution / gram glass for the third time. Then the glas...

Embodiment 2

[0032] Take analytically pure chemical reagents, according to SiO 2 52.07mol%, Na 2 CO 3 5.82 mol%, H 3 BO 3 39.17 mol %, Al(OH) 3 The ratio of 2.94mol% is used to prepare mixed raw materials. After mixing and grinding evenly, put it into a corundum crucible, and after melting at 1400°C for 60 minutes, cool it on an iron plate at 300°C to form borosilicate glass.

[0033] Put the borosilicate glass into a high-temperature furnace and heat-treat at 560° C. for 40 hours, and then cut it into glass pieces of 5 mm×5 mm×1 mm. Put the glass into a sealed autoclave, and place it at 90°C for three times of 12-hour acid treatment; for the first time, immerse it in 1mol / L hydrochloric acid solution at a ratio of 50ml acid solution / gram of glass, and for the second time Immerse in 1mol / L hydrochloric acid solution three times at the ratio of 10ml acid solution / gram glass. Then the glass is taken out from the autoclave, washed with distilled water, and dried to obtain a high-si...

Embodiment 3

[0036] Take analytically pure chemical reagents, according to SiO 2 62.81mol%, Na 2 CO 3 10.15 mol%, H 3 BO 3 The ratio of 27.04 mol % is used to prepare mixed raw materials. After mixing and grinding evenly, put it into a corundum crucible, and after melting at 1500°C for 30 minutes, cool it on an iron plate at 200°C to form borosilicate glass.

[0037] Put the borosilicate glass into a high-temperature furnace and heat-treat at 630° C. for 10 hours, and then cut it into glass pieces of 5 mm×5 mm×1 mm. Put the glass into a sealed autoclave, immerse it in a 1mol / L nitric acid solution at a ratio of 50ml acid solution / gram of glass, and place it at 100°C for a 48-hour acid treatment. Then the glass is taken out from the autoclave, washed with distilled water, and dried to obtain porous glass.

[0038] Use Tb 4 o 7 and Eu(NO 3 ) 3 Prepare a mixed solution containing 0.01mol / L Tb ion and 0.01mol / L Eu ion with nitric acid solution. Soak the aforementioned high-silica...

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Abstract

The invention provides a preparation method for sensitization-enhanced green light-emitting high-silica glass. The preparation method comprises the following steps: melting borosilicate glass, controlling heat treatment conditions, restricting the degree of phase-splitting and carrying out acid leaching so as to obtain porous glass which contains a part of residual Na <+> ions; dipping the porous glass in a solution containing Tb and Eu ions for immersion and doping; and sintering the porous glass at a high temperature in a reducing atmosphere so as to obtain the compact sensitization-enhanced green light-emitting high-silica glass. According to the invention, since a glass structure has Na <+>, energy transfer between ion is achieved and the excitation band of Tb<3+> ions is transferred and becomes about 320 nm instead of about 245 nm, thereby not only effectively increasing the excitation bandwidth of Tb<3+> but also greatly improving luminous intensity. The sensitization-enhanced green light-emitting high-silica glass prepared in the invention is expected to be used as a novel luminescence and laser material in a variety of fields like scientific research, national defense and health care.

Description

technical field [0001] The invention relates to a green-light-emitting high-silica glass, in particular to a method for preparing a sensitized and enhanced green-light-emitting high-silica glass. Background technique [0002] Electromagnetic waves of various bands have different transmission characteristics in different media. Similar to the light-transmitting window in the atmosphere, the attenuation of seawater to blue-green light in the 450-550nm band is much smaller than that of other bands. Therefore, blue-green lasers in this band can be used for new equipment such as underwater target detection, control, and communication. [0003] At the same time, in medicine, the absorption peak wavelength of red blood cells and other biological tissues is also around 542nm, and the more mature commercial 532nm lasers are not in this optimal position. The development of lasers with more matching wavelengths can greatly improve the detection sensitivity of corresponding medical eq...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/091C03C4/12C03C17/22C03B32/00
Inventor 沈应龙陈丹平张强李文涛
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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