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A glass-ceramic material with ultra-broadband near-infrared luminescence and its preparation method

A glass-ceramic and near-infrared technology, applied in the field of ultra-broadband luminescent materials, can solve problems such as uneven gain, difficulty in ultra-broadband near-infrared light emission, and small bandwidth expansion, so as to increase bandwidth parameters, improve information transmission capabilities, easy processing effect

Active Publication Date: 2016-10-05
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years people to Ni 2+ A lot of research work has been done on doped glass-ceramic, and in g~Ga 2 o 3 , Mg 2 SiO 4 , Ba 0.808 (Al 1.71 Si 2.29 )O 8 and other transparent glass-ceramics realized Ni 2+ Luminescence in the near-infrared band, but because it has only one octahedral crystallite phase, it is difficult to achieve ultra-broadband near-infrared luminescence
Although it has been reported that Ni-Cr or Ni-Bi co-doping and Ni entering the two lattice sites of the same microcrystal can broaden the near-infrared emission bandwidth, the bandwidth broadening is relatively small and there are problems of uneven gain.

Method used

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  • A glass-ceramic material with ultra-broadband near-infrared luminescence and its preparation method
  • A glass-ceramic material with ultra-broadband near-infrared luminescence and its preparation method
  • A glass-ceramic material with ultra-broadband near-infrared luminescence and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In this example, the steps of preparing glass-ceramic by high-temperature melting method and heat treatment method are as follows:

[0037] (1) Select high-purity Li 2 CO 3 , SiO 2 、Al 2 o 3 、 Ta 2 o 5 , NiO as raw materials, the molar ratio between raw materials is controlled as Li2 CO 3 : SiO 2 :Al 2 o 3 : Ta 2 o 5 : NiO=20:30:30:20:0.2;

[0038] (2) Weigh a total of 40 grams of raw materials according to the ratio of step (1), grind them in an agate grinding body for 40 minutes, and then put them into a platinum crucible and keep them warm at 1600°C for 2 hours. The melted glass solution was poured on a copper plate and flattened with another copper plate, then transferred to a muffle furnace and kept at 500°C for 5 hours, then the power of the muffle furnace was turned off, and the glass was allowed to cool down to room temperature with the furnace to obtain Glass brown in color. Put the glass into the muffle furnace, raise the temperature from room te...

Embodiment 2

[0043] In this example, the steps of preparing glass-ceramic by high-temperature melting method and heat treatment method are as follows:

[0044] (1) Select high-purity Li 2 CO 3 , SiO 2 、Al 2 o 3 , Nb 2 o 5 , NiO as raw materials, the molar ratio between raw materials is controlled as Li 2 CO 3 : SiO 2 :Al 2 o 3 : Nb 2 o 5 :NiO=25:35:15:25:1;

[0045] (2) Weigh a total of 40 grams of raw materials according to the ratio of step (1), grind them in an agate grinder for 40 minutes, and then put them into a platinum crucible and keep them warm at 1650°C for 2 hours. The melted glass solution was poured on a copper plate and flattened with another copper plate, then transferred to a muffle furnace and kept at 500°C for 5 hours, then the power of the muffle furnace was turned off, and the glass was allowed to cool down to room temperature with the furnace to obtain Glass brown in color. Put the glass into the muffle furnace, raise the temperature from room temperatu...

Embodiment 3

[0047] (1) Select high-purity Li 2 CO 3 , SiO 2 、Al 2 o 3 、 Ta 2 o 5 , NiO as raw materials, the molar ratio between raw materials is controlled as Li 2 CO 3 : SiO 2 :Al 2 o 3 : Ta 2 o 5 : NiO=20:30:30:20:0.2;

[0048] (2) Weigh a total of 40 grams of raw materials according to the ratio of step (1), grind them in an agate grinding body for 40 minutes, and then put them into a platinum crucible and keep them warm at 1600°C for 2 hours. The melted glass solution was poured on a copper plate and flattened with another copper plate, then transferred to a muffle furnace and kept at 500°C for 5 hours, then the power of the muffle furnace was turned off, and the glass was allowed to cool down to room temperature with the furnace to obtain Glass brown in color. Put the glass into the muffle furnace, raise the temperature from room temperature to 1000°C at a rate of 300°C / h, keep it warm for 10 hours, then turn off the power of the muffle furnace and let the glass cool d...

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Abstract

The invention discloses a microcrystal glass material with ultra wide band near-infrared light emission and a preparation method of the microcrystal glass material. The microcrystal glass material comprises the following components in percentage by mole: 20-30% of Li2O2, 30-40% of SiO2, 10-30% of Al2O3, 0.005-5% of NiO and 10-30% of Ta2O5 or Nb2O5. Due to thermal treatment, two types of microcrystal of an octahedral structure, namely, LiAlSi2O6 and LiTaO3 or LiAlSi2O3 and LiNbO3, can be simultaneously separated inside the glass, as a light emitting center, the Ni element can be doped into the two microcrystal environments simultaneously, and thus near-infrared light emission with the ultra wide band of 1.0-1.7mm is achieved. The transparent microcrystal glass is expected to be used in fields such as wide band optical amplifiers and near-infrared ultra wide band tunable lasers.

Description

technical field [0001] The invention relates to ultra-broadband luminescent materials, in particular to a glass-ceramic material with ultra-broadband near-infrared luminescence and a preparation method thereof. Background technique [0002] With the development of communication technology, the transmission of greater information capacity has become one of the important research contents of optical fiber communication. Optical amplifiers and lasers are two core devices in the field of optical communications. The bandwidth of their gain media determines the amplification bandwidth of optical amplifiers and the tunable range of lasers, which in turn affects the information transmission capabilities of optical communications. At present, the gain medium materials that can realize near-infrared luminescence are mainly crystals or glass materials doped with rare earth ions and transition metal ions. [0003] The luminescence of rare earth ions comes from the transition of 4f-4f e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/12C03C10/02C03C4/12
CPCC03C4/12C03C10/0027
Inventor 周时凤于泳泽陈杰杰邱建荣
Owner SOUTH CHINA UNIV OF TECH
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