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Intermediate infrared luminescent material for rare earth ion doped glass ceramics and preparation method of intermediate infrared luminescent material

An infrared luminescence, glass-ceramic technology, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of low luminous efficiency of ordinary quartz glass, inability to draw optical fibers, and harsh crystal material preparation conditions, etc. The effect of enhanced luminous efficiency, good optical performance

Active Publication Date: 2019-03-26
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these two kinds of matrix materials have their own defects. The preparation conditions of crystal materials are relatively harsh, and they cannot be used to draw optical fibers, which limits their further applications; ordinary quartz glass has low luminous efficiency, and its high phonon energy ( 1100cm -1 ) limits the energy conversion efficiency of the laser, and the intrinsic absorption of the matrix limits the laser output in the mid-infrared band, which cannot meet the requirements for preparing lasers

Method used

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  • Intermediate infrared luminescent material for rare earth ion doped glass ceramics and preparation method of intermediate infrared luminescent material
  • Intermediate infrared luminescent material for rare earth ion doped glass ceramics and preparation method of intermediate infrared luminescent material
  • Intermediate infrared luminescent material for rare earth ion doped glass ceramics and preparation method of intermediate infrared luminescent material

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Embodiment 1

[0034] By composition 75TeO 2 -12.5Nb 2 o 5 -12.5Bi 2 o 3 (mol%) Weigh 60g of required TeO 2 , Nb 2 o 5 , Bi 2 o 3 , Er 2 o 3 Powder raw material (99.99% pure), Er 2 o 3Add 0.75 mol% according to the molar ratio, mix well, put it into a crucible with a cover, put it at 850°C and melt for 30 minutes, then quickly cast the glass solution onto a stainless steel template that has been preheated to 200°C, and place it in the muffle The furnace was kept at 380°C for two hours, and the temperature was cooled to room temperature at a rate of 5°C / min to obtain bismuth tellurite glass containing rare earth ions, which was then cut and polished; The tellurium bismuth salt glass containing rare earth ions is heat-treated at 400°C for 10h (glass transition temperature Tg=398°C), then heat-treated at 425°C for 180min (crystallization temperature Tc=428°C), and naturally cooled to room temperature to obtain transparent crystallites Glass. Under the same conditions, the heat tre...

Embodiment 2

[0037] By composition 75TeO 2 -12.5Nb 2 o 5 -12.5Bi 2 o 3 (mol%) Weigh 60g of required TeO 2 ,Nb 2 o 5 , Bi 2 o 3 ,Er 2 o 3 Powder raw material (99.99% pure), Er 2 o 3 Add 0.5mol% according to the molar ratio, mix well, put it into a crucible with a cover, put it at 850°C and melt for 30min, then quickly cast the glass solution onto a stainless steel template that has been preheated to 200°C, and after forming, put it in a muffle The furnace was kept at 380°C for two hours, and the temperature was cooled to room temperature at a rate of 5°C / min to obtain bismuth tellurite glass containing rare earth ions, which was then cut and polished; The bismuth tellurite glass containing rare earth ions was heat-treated at 400°C for 10 hours, then heat-treated at 425°C for 180 minutes, and cooled naturally to room temperature to obtain transparent glass-ceramics. Under the same conditions, the heat treatment time at 425 °C was replaced by 120, 100 and 0 min.

[0038] The rar...

Embodiment 3

[0040] By composition 65TeO 2 -20Nb 2 o 5 -15Bi 2 o 3 (mol%) Weigh 60g of required TeO 2 ,Nb 2 o 5 , Bi 2 o 3 ,Er 2 o 3 Powder raw material (99.99% pure), Er 2 o 3 Add 0.4mol% according to the molar ratio, mix well, put it into a crucible with a cover, place it at 1000°C and melt for 45min, then quickly cast the glass solution onto a stainless steel template that has been preheated to 200°C, and place it in the muffle The furnace was kept at 380°C for two hours, and the temperature was cooled to room temperature at a rate of 10°C / min to obtain bismuth tellurite glass containing rare earth ions, which was then cut and polished; The bismuth tellurate glass containing rare earth ions is heat-treated at around 400°C for 10 hours, then heat-treated at 423°C for 180 minutes, and cooled naturally to room temperature to obtain transparent glass-ceramics. Under the same conditions, the heat treatment time at 423 °C was replaced by 120, 100 and 0 min.

[0041] The rare ear...

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Abstract

The invention discloses an intermediate infrared luminescent material for rare earth ion doped glass ceramics and a preparation method of the intermediate infrared luminescent material. The intermediate infrared luminescent material is prepared from bismuth tellurite glass ceramics containing rare earth ions Er<3+> and Bi3.20Te0.80O6.40 nanocrystalline particles, firstly, bismuth tellurite glass containing the earth ions Er3<+> is prepared, and then the glass ceramics containing Bi3.20Te0.80O6.40 nanocrystalline are prepared from the bismuth tellurite glass through a two-step heat treatment technology. The obtained glass ceramics have the good optical property, and through irradiation of exciting light, efficient 2.7 [mu]m fluorescence radiation is achieved through the rare earth ions Er<3+> in a low phonon energy environment created by the nanocrystalline.

Description

technical field [0001] The invention provides a mid-infrared luminescent material and a preparation method of rare earth-doped glass-ceramic, belonging to the technical field of mid-infrared luminescent materials. Background technique [0002] Fluorescence in the 2-5μm band has a relatively high transmittance in the atmosphere, which can be used for optical communication transmission and applied to communication, national defense, satellite remote sensing and other fields. In addition, 2-5μm band fluorescence is the characteristic absorption band of many molecules, which makes mid-infrared fluorescence have broad application prospects in environmental protection fields such as air pollution monitoring, industrial process control, and pollutant leakage monitoring. At the same time, mid-infrared fluorescence is also It can be used in drug monitoring, medical diagnosis, laser surgery and other medical fields. [0003] Tellurite glass has wide infrared transmission window, low ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B19/02C03B32/02C03C10/00C03C4/12
CPCC03B19/02C03B32/02C03C4/12C03C10/00
Inventor 朱文明陈东丹杨中民张勤远钱奇唐国武
Owner SOUTH CHINA UNIV OF TECH
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