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Cs3LaCl6 nanocrystalline-containing transparent chalcohalide glass ceramic and its preparation

A technology of sulfur halide glass and glass ceramics, applied in the field of optical materials, can solve the problems of difficult preparation, easy water absorption, low phonon energy, etc., and achieves low cost, simple preparation process, excellent near-infrared down-transfer and visible up-conversion luminescence. performance effect

Inactive Publication Date: 2013-11-06
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although chlorides have lower phonon energies (~260 cm -1 ), which is more suitable as a rare earth-doped luminescent host, but this type of material is extremely water-absorbing, requires special handling and storage, and is difficult to prepare

Method used

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  • Cs3LaCl6 nanocrystalline-containing transparent chalcohalide glass ceramic and its preparation
  • Cs3LaCl6 nanocrystalline-containing transparent chalcohalide glass ceramic and its preparation
  • Cs3LaCl6 nanocrystalline-containing transparent chalcohalide glass ceramic and its preparation

Examples

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Effect test

example 1

[0016] Example 1: High-purity germanium powder (5N), gallium sulfide (4N), sulfur powder (5N), lanthanum sulfide (4N), lanthanum chloride (4N), cesium chloride (3N), neodymium sulfide (4N) Or erbium sulfide (4N) powder raw material according to 45GeS 2 -30Ga 2 S 3 -5.85La 2 S 3 -4LaCl 3 -15CsCl-0.15Nd 2 S 3 (Er 2 S 3 ) after accurately weighing the molar components, place them in a quartz tube, connect the open end of the quartz tube to a vacuum system, and pump out the water and air in the quartz tube and medicine; when the vacuum degree reaches 10 -3 At mbar, seal the quartz tube with an oxyhydrogen flame; put the sealed quartz tube into a swing furnace, heat up to 800°C and start to swing, and keep it warm for 12 hours to melt it; then, take out the quartz tube and insert it vertically into the water After quenching for a few seconds, a block of sulfur halide glass can be obtained. The precursor glass can be obtained by putting the sulfur halide glass into a resi...

example 2

[0017] Example 2: High-purity germanium powder (5N), gallium sulfide (4N), sulfur powder (5N), lanthanum sulfide (4N), lanthanum chloride (4N), cesium chloride (3N), neodymium sulfide (4N) Or erbium sulfide (4N) powder raw material according to 40GeS 2 -35Ga 2 S 3 -6.85La 2 S 3 -4LaCl 3 -14CsCl-0.15Nd 2 S 3 (Er 2 S 3 ) after accurately weighing the molar components, place them in a quartz tube, connect the open end of the quartz tube to a vacuum system, and pump out the water and air in the quartz tube and medicine; when the vacuum degree reaches 10 -3 At mbar, seal the quartz tube with an oxyhydrogen flame; put the sealed quartz tube into a swing furnace, heat up to 950°C and start to swing, and keep it warm for 16 hours to melt it; then, take out the quartz tube and insert it vertically into the water After quenching for a few seconds, a block of sulfur halide glass can be obtained. The precursor glass can be obtained by putting the sulfur halide glass into a resi...

example 3

[0018] Example 3: High-purity germanium powder (5N), gallium sulfide (4N), sulfur powder (5N), lanthanum sulfide (4N), lanthanum chloride (4N), cesium chloride (3N), neodymium sulfide (4N) Or erbium sulfide (4N) powder raw material according to 56GeS 2 -20Ga 2 S 3 -3.85La 2 S 3 -4LaCl 3 -16CsCl-0.15Nd 2 S 3 (Er 2 S 3 ) after accurately weighing the molar components, place them in a quartz tube, connect the open end of the quartz tube to a vacuum system, and pump out the water and air in the quartz tube and medicine; when the vacuum degree reaches 10 -3 At mbar, seal the quartz tube with a hydrogen-oxygen flame; put the sealed quartz tube into a swing furnace, heat up to 1000°C and start to swing, and keep it warm for 24 hours to melt it; then, take out the quartz tube and insert it vertically into the water After quenching for a few seconds, a block of sulfur halide glass can be obtained. The precursor glass can be obtained by putting the sulfur halide glass into a ...

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Abstract

The invention discloses a Cs3LaCl6 nanocrystalline-containing transparent chalcohalide glass ceramic and its preparation. The glass ceramic comprises: 40-60 mol% of GeS2; 25-35 mol% of Ga2S3; 2-8 mol% of La2S3; 2-8 mol% of LaCl3; 10-20 mol% of CsCl; and 0.01-0.2 mol% of Re2S3, wherein Re represents a rare earth ion (such as Nd, Er). The preparation process of the glass ceramic consists of melt quenching preparation of precursor glass and subsequent crystallization heat treatment of the precursor glass. By component exploration, the transparent chalcohalide glass ceramic containing the single Cs3LaCl6 nanocrystalline can be prepared. The nanocomposite material has excellent properties of under near-infrared transfer and visible up-conversion luminescence, and has potential application in near infrared lasers, optical fiber amplifiers, three-dimensional solid-state display and other fields.

Description

technical field [0001] The invention relates to the field of optical materials, in particular to a Cs-containing 3 LaCl 6 Nanocrystalline transparent sulfur halide glass ceramics and its preparation technology. Background technique [0002] Rare earth ion-doped luminescent materials have potential applications in the fields of solid-state lasers, optical communications, and solar energy, and have attracted intense attention in recent years. The luminescence quantum efficiency of such materials is closely related to the luminescence dynamics of the rare earth ion activation center, and is often limited by the matrix environment in which the rare earth is located. Generally speaking, host materials with low phonon energy can effectively reduce the probability of non-radiative relaxation of rare earth ions, which is beneficial for them to obtain higher luminescence quantum efficiency. Therefore, most of the current work at home and abroad is mainly focused on the study of fl...

Claims

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Application Information

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IPC IPC(8): C03C10/16
Inventor 杨安平林航陈大钦余运龙王元生
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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