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

A technology of high silica glass and borosilicate glass, which is applied in the field of preparation of sensitized and enhanced green light-emitting high silica glass, can solve the problems of difficult integration, human harm, and insufficient luminous intensity.

Active Publication Date: 2012-10-17
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

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Experimental program
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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 26.48 mol% of mixed materials are prepared. After mixing and grinding uniformly, it is put into a platinum crucible, and after being melted at a high temperature of 1450°C for 40 minutes, it is cooled and molded on an iron plate at 400°C to prepare borosilicate glass.

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

Embodiment 2

[0033] 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 2.94mol% of mixed materials are prepared. After mixing and grinding uniformly, it is put into a corundum crucible, and after being melted at a high temperature of 1400°C for 60 minutes, it is cooled and molded on an iron plate at 300°C to prepare borosilicate glass.

[0034] The borosilicate glass was put into a high-temperature furnace and subjected to a heat treatment at 560° C. for 40 hours, and then cut into 5 mm×5 mm×1 mm glass pieces. Put the glass in a sealed autoclave and place it at 90°C for three 12-hour acid treatments; the first time is immersed in a 1mol / L hydrochloric acid solution at a ratio of 50ml acid solution / g glass, and the second to Dip into 1mol / L hydrochloric acid solution three times at the ratio of 10ml acid solution / g glass. Then the glass is taken out of the autoclave, washed with distilled water, and dried to obtain hi...

Embodiment 3

[0037] Take analytically pure chemical reagents according to SiO 2 62.81mol%, Na 2 CO 3 10.15 mol%, H 3 BO 3 27.04 mol% of mixed materials are prepared. After mixing and grinding uniformly, it is put into a corundum crucible, after being melted at a high temperature of 1500°C for 30 minutes, it is cooled and molded on an iron plate at 200°C to prepare borosilicate glass.

[0038] The borosilicate glass was put into a high-temperature furnace and subjected to a heat treatment at 630°C for 10 hours, and then cut into 5mm×5mm×1mm glass pieces. Put the glass in a sealed autoclave, immerse it in a 1mol / L nitric acid solution at a ratio of 50ml acid solution / g glass, and place it at 100°C for a 48-hour acid treatment. Then take the glass out of the autoclave, wash it with distilled water, and dry it to obtain porous glass.

[0039] 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. The aforementioned high...

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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 Applications(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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