Large-area ultrathin single crystal and rapid growth method thereof

A crystal growth and single crystal technology, applied in the field of materials, can solve problems such as uneven concentration, high growth temperature, and long growth cycle

Active Publication Date: 2017-01-04
成都安信睿特种照明科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this growth method has some natural defects, such as high growth temperature, uneven concentration, low doping concentration, long growth cycle, high cost, and the introduction of crucible material impurities, etc.

Method used

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  • Large-area ultrathin single crystal and rapid growth method thereof
  • Large-area ultrathin single crystal and rapid growth method thereof
  • Large-area ultrathin single crystal and rapid growth method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] According to Ce 3+ : The molar ratio of YAG phosphor (particle size: 10μm) to YAG (particle size: 10μm) is 1:12, accurately weigh 7.7305gCe 3+ : YAG, 53.1404g Y 2 o 3 , 39.8088g Al 2 o 3 , 24.7865g ethanol, 37.1797g xylene, 3.9653g fish oil, 0.3726g tetraethyl orthosilicate and 0.0791g MgO (0.5μm particle size) powder, ball mill the weighed powder for 24h, then add 5.9480g PVB , 0.7435g n-butanol, 2.9740g butyl benzyl phthalate ball milled for 24 hours. The ball-milled slurry is flow molded to obtain a flow mold sheet with a thickness of about 0.15mm, and the laminated two-layer isostatically pressed (temperature 120°C, pressure 8Mpa, holding time 3min), and then in an oxygen atmosphere at 0.5°C / min After the heating rate is raised to 700 ° C for 10 hours of thermal decomposition (that is, the degreasing step), in a vacuum of 10 -4 Pa, grown at 1800°C for 2 hours, and then cooled down to room temperature at a cooling rate of 1°C / min to obtain a yellow single cryst...

Embodiment 2

[0061] According to Eu 3+ :Y 2 o 3 (Particle size is 10μm) phosphor and Y 2 o 3 (particle size 15μm) molar ratio 1:2, accurately weigh 10gEu 3+ :Y 2 o 3 , 19.8367g Y 2 o 3 , 8.7843g ethanol, 13.1765g xylene, 1.7177g fish oil, 0.1353g tetraethyl orthosilicate, mill the weighed powder for 24 hours, then add 2.5765g PVB, 0.3971g n-butanol, 0.9882g phthalic acid Butylbenzyl ester was ball milled for 24 hours. The ball-milled slurry is flow molded to obtain a flow mold sheet with a thickness of about 0.15mm, and the two layers of the laminate are isostatically pressed (temperature 120°C, pressure 4Mpa, holding time 3min), and then in an oxygen atmosphere at 0.5°C / min After the heating rate is raised to 700 ° C for 10 hours of thermal decomposition (that is, the degreasing step), in a vacuum of 10 -4 Pa, grown at 1880°C for 5 hours, and then cooled down to room temperature at a cooling rate of 5°C / min to obtain a red single crystal sheet with a thickness of 0.25mm and a di...

Embodiment 3

[0063] According to Mn 2+ :MgAl 2 o 4 Phosphor powder (particle size 10μm) and MgAl 2 o 4 (particle size 10μm) molar ratio 1:1, accurately weigh 14.2563g Mn 2+ :MgAl 2 o 4 , 4.8367g MgO, 10.8279g Al 2 o 3 , 7.7841g ethanol, 11.1765g xylene, 0.7172g fish oil, 0.1154g tetraethyl orthosilicate, mill the weighed powder for 24 hours, then add 2.0763g PVB, 0.1972g n-butanol, 0.8882g phthalic acid Butylbenzyl ester was ball milled for 24 hours. The ball-milled slurry is flow molded to obtain a flow mold sheet with a thickness of about 0.15mm, and the laminated two-layer isostatically pressed (temperature 120°C, pressure 8Mpa, holding time 3min), and then in an oxygen atmosphere at 0.5°C / min After the heating rate is raised to 700°C for 10 hours of thermal decomposition (that is, the degreasing step), it grows in a nitrogen atmosphere of 0.5Mpa and a temperature of 1830°C for 2 hours, and then cools down to room temperature at a cooling rate of 1°C / min to obtain a thickness o...

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Abstract

The invention discloses a large-area ultrathin single crystal and a rapid growth method thereof. The method comprises the following steps of preparing flow matrix by utilizing phosphor powder and an oxide medium as raw materials or phosphor powder, an oxide medium and rare earth oxide as raw materials; and then performing crystal growth, thereby obtaining the single crystal. The method has the following advantages that luminescent ions are uniform in distribution and controllable in concentration, the single crystal is large in area and ultrathin, ultra-short in growth cycle, low in growth temperature, low in cost and high in yield.

Description

technical field [0001] The invention belongs to the field of materials, and relates to a large-area ultra-thin single crystal and a rapid growth method thereof. Background technique [0002] The current crystal growth methods include the pulling method (Czochralski), the flame melting method (Verneuil), the floating zone melting method, the crucible descent method (Bridgman-Stockbarger), etc., usually the raw materials are heated and melted in the crucible at high temperature, and then passed through the temperature Large-sized target crystals are grown under the control or guidance of seed crystals, and finally processed into various products for application. However, this growth method has some natural defects, such as high growth temperature, uneven concentration, low doping concentration, long growth cycle, high cost, and the introduction of crucible material impurities. Contents of the invention [0003] The purpose of the invention is to provide a large-area ultra-t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/22B22F3/14C30B11/00C30B29/16
CPCB22F3/14B22F3/22C30B11/00C30B29/16
Inventor 曹永革麻朝阳
Owner 成都安信睿特种照明科技有限公司
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