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Rare earth doped near-infrared luminescent glass and preparation method thereof

A technology of luminescent glass and rare earth doping, applied in the field of near-infrared luminescent glass, can solve the problems of limited practical application of materials and single coverage of near-infrared luminescence, and achieve excellent chemical and thermal stability, non-toxic and environmental protection The effect of simple price and preparation process

Inactive Publication Date: 2014-05-07
河北地质大学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the near-infrared luminescence emitted by doped rare earth ions covers a relatively single band range.
These problems limit the practical application of materials, therefore, it is necessary to further find new suitable matrix materials

Method used

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  • Rare earth doped near-infrared luminescent glass and preparation method thereof
  • Rare earth doped near-infrared luminescent glass and preparation method thereof
  • Rare earth doped near-infrared luminescent glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] According to the molar ratio of glass to 45SiO 2 : 10Al 2 o 3: 15Na 2 O: 30ZnF 2 : 0.5Ho 2 o 3 Accurately weigh the raw materials of each component, of which Na 2 O is composed of an equivalent mole of Na 2 CO 3 Introduced, raw material SiO 2 、Al 2 o 3 、Na 2 CO 3 and ZnF 2 Analytical pure, Ho 2 o 3 It is pure 3N5. The mole fraction refers to the fraction of each composition calculated by mole, which is similar to the fraction by weight. The raw materials are fully ground and mixed in a mortar, put into a crucible, placed in a muffle furnace, and melted at 1350°C for 1.5 hours. Pour the molten glass into a preheated mold, anneal at 620°C for 6 hours, and then cool to room temperature with the furnace. After the prepared glass is cut, ground and polished, the desired sample can be obtained. Under the excitation of 469 nm, this sample presents near-infrared emission of 7 bands in the range of 800-1600 nm (such as figure 1 shown). Its emission centers ...

Embodiment 2

[0045] According to the molar ratio of glass 45SiO 2 : 12Al 2 o 3 : 13MgO: 30MgF 2 :0.5Ho 2 o 3 Accurately weigh the raw materials of each component, among which the raw material SiO 2 、Al 2 o 3 , MgO and MgF 2 Analytical pure, raw material Ho 2 o 3 It is pure 3N5. The raw materials are thoroughly ground and mixed in a mortar, put into a crucible, placed in a muffle furnace, and melted at 1400°C for 1 hour. Pour the molten glass into a preheated mold, anneal at 640°C for 8 hours, and then cool down to room temperature with the furnace. After the prepared glass is cut, ground and polished, the desired sample can be obtained. Under the excitation of 469 nm, this sample presents near-infrared emission of 7 bands in the range of 800-1600 nm (such as figure 1 shown). Its emission centers are located at 830, 909, 980, 1094, 1187, 1311 and 1488 nm, respectively, corresponding to Ho 3+ of 5 f 4 ( 5 S 2 )→ 5 I 7 , 5 I 5 → 5 I 8 , 5 f 5 → 5 I 7 , 5 f 4 ( ...

Embodiment 3

[0047] According to the molar ratio of glass 45SiO 2 : 15Al 2 o 3 : 10CaO : 30CaF 2 :0.5Ho 2 o 3 Accurately weigh the raw materials of each component, in which CaO is composed of equal moles of CaCO 3 Introduced, raw material SiO 2 、Al 2 o 3 , CaCO 3 and CaF 2 Analytical pure, raw material Ho 2 o 3 It is pure 3N5. The raw materials are thoroughly ground and mixed in a mortar, put into a crucible, placed in a muffle furnace, and melted at 1400°C for 1 hour. Pour the molten glass into a preheated mold, anneal at 640°C for 8 hours, and then cool down to room temperature with the furnace. After the prepared glass is cut, ground and polished, the desired sample can be obtained. Under the excitation of 469 nm, this sample presents near-infrared emission of 7 bands in the range of 800-1600 nm (such as figure 1 shown). Its emission centers are located at 821, 905, 988, 1097, 1187, 1313 and 1493 nm, respectively, corresponding to Ho 3+ of 5 f 4 ( 5 S 2 ) → 5 I 7...

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Abstract

The invention discloses a kind of rare earth doped near-infrared luminescent glass and a preparation method thereof. The luminescent glass is composed of the following components in mole ratio: 45 parts of SiO2, 10 parts of Al2O3, 15 parts of Na2O, 30 parts of ZnF2, and 0.5 part of RE2O3 or 45 parts of SiO2, a parts of Al2O3, b parts of MO, 30 parts of MF2, and 0.5 part of RE2O3, wherein a refers to the mole fraction of Al2O3, b refers to the mole fraction of MO, a+b=25, a is greater than or equal to 6 and less than or equal to 15, b is greater than or equal to 10 and less than or equal to 19, MO refers to alkaline earth metal oxide, MF2 refers to alkaline earth metal fluoride, and RE2O3 refers to rare earth oxide. The glass disclosed by the invention is prepared by using a molten cooling method, and selected raw materials are non-toxic, environment-friendly, and low in cost; the rare earth doped glass can emit near-infrared light at multiple wave bands, and in the process of emitting, two-step even three-step continuous near-infrared radiation exists; the luminescent quantum efficiency is expected to be greater than 100%. The glass can be used for preparing near infrared optical fiber materials.

Description

technical field [0001] The invention relates to a near-infrared luminescent glass, in particular to a rare earth-doped near-infrared luminescent glass and a preparation method thereof. Background technique [0002] Rare earth near-infrared luminescent materials have important applications in optical fiber communication, laser systems, bioanalytical sensors, and biomedical imaging, so they have received extensive attention. [0003] Among the rare-earth near-infrared luminescent host materials, luminescent glass has attracted widespread attention because it is easy to make fiber lasers. At present, the matrix materials used in fiber lasers are mostly quartz glass and fluoride glass. Although quartz glass has high chemical stability and thermal stability, its phonon energy is high, so it is difficult to obtain high near-infrared luminous efficiency. Although fluoride glass has low phonon energy and high luminous efficiency, its chemical stability is poor, the preparation pro...

Claims

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Application Information

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IPC IPC(8): C03C4/12C03C3/112
Inventor 冯丽
Owner 河北地质大学
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