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ce 3+ 、tb 3+ : Preparation method of yag glass-ceramics

A technology of glass-ceramics and lead glass, which is applied in the preparation of terbium-doped yttrium-aluminum-garnet glass-ceramics and in the field of cerium, which can solve the complex and difficult production process, and the difficulty in precise control of the crystal type, quantity and size of YAG glass-ceramics and other problems, to achieve good economic benefits, simple preparation process, and good optical properties

Active Publication Date: 2017-05-10
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

[0003] However, since the crystallization temperature of YAG glass-ceramics is usually above 1000°C, the base glass is required to have a high melting point; the refractive index of YAG crystal reaches 1.82, and it is difficult to select a base glass that satisfies both high melting point and high refractive index; through traditional heat treatment The YAG glass-ceramics prepared by this method is difficult to precisely control the crystal type, amount and size, which reduces the optical properties of the glass to a certain extent; the YAG glass-ceramics prepared by the traditional method needs to go through a series of post-heat treatment processes. complicated, difficult
The above technical shortcomings seriously restrict the development of YAG glass-ceramics, and a simple and easy-to-control preparation method is urgently needed

Method used

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  • ce <sup>3+</sup> 、tb <sup>3+</sup> : Preparation method of yag glass-ceramics
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  • ce <sup>3+</sup> 、tb <sup>3+</sup> : Preparation method of yag glass-ceramics

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Embodiment 1

[0018] The preparation method of the present embodiment is as follows:

[0019] First, determine the mole percentage composition of lead glass when the refractive index of lead glass is n=1.82 through the software "Inorganic Glass Engineer": 27PbO-28PbF 2 -12Al 2 o 3 -33B 2 o 3 , where PbO uses Pb(NO 3 ) 2 Introduce, B 2 o 3 with HBO 3 The purity of all raw materials is analytically pure, and 100g of powder is prepared according to the above molar percentage, put into an alumina crucible, melted in a silicon carbide rod furnace at 1000°C for 45min, and then directly pour the molten liquid into cold water for rapid cooling to obtain shattered lead glass;

[0020] Press Ce with Analytical Balance 3+ , Tb 3+ : YAG crystal and described broken lead glass mass ratio are 0.3, take the Ce of 20g 3+ , Tb 3+ : YAG crystal and lead glass as raw materials, the Ce 3+ , Tb 3+ : 85% of the YAG crystal particle size is distributed in 1um, and the purity is 99.0%. The raw mater...

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Abstract

A preparation method of Ce<3+>, Tb<3+>: YAG microcrystalline glass comprises three steps of preparation of scrap lead glass, mixing and drying of ingredients, and temperature control sintering. Sintering is performed after the glass is softened under temperature control by utilizing an excellent luminescence characteristic of a Ce<3+>, Tb<3+>: YAG crystal and a high refractive index and low softening temperature of lead glass, to prepare a composite material with crystal particles uniformly dispersed in the glass. The method of the invention has characteristics of being low in preparation temperature, easy in control of crystallization, and simple in process without heat post-treatment. The obtained Ce<3+>, Tb<3+>: YAG microcrystalline glass realizes white light output under the excitation of a 450 nm LD semiconductor laser.

Description

technical field [0001] The present invention relates to glass-ceramics, particularly a kind of cerium, terbium co-doped yttrium aluminum garnet (hereinafter referred to as Ce 3+ , Tb 3+ : YAG) preparation method of glass-ceramics. Background technique [0002] A semiconductor light emitting diode (Light Emitting Diode, LED) device has the advantages of low energy consumption, strong impact resistance, good shock resistance, high reliability, and long service life. Due to these characteristics, light emitting diodes (Light Emitting Diode, referred to as LED) are widely used in photoelectric control, display, lighting and other fields. With the development of society, people's demand for white light LED is increasing day by day, especially the demand for high-power white light LED is becoming increasingly urgent, and the research on high-power white light LED has also become a hot spot in recent years. Due to some technical bottlenecks in the preparation of phosphors for hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/00
Inventor 袁新强姜益光张龙范金太姜雄伟毛小建
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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