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Prepn. of europium activated yttrium-gadolinium borate phosphor

A technology of yttrium-gadolinium borate and phosphor, which is applied in the field of preparing Eu3+-activated yttrium-gadolinium borate phosphor, can solve the problems of long gelation time and unfavorable industrial scale production, and achieve high purity and be conducive to industrialization Large-scale production and the effect of reducing production costs

Inactive Publication Date: 2003-01-08
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

This method has obvious shortcomings, mainly because the gelation time is too long, which is extremely unfavorable for industrial scale production

Method used

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  • Prepn. of europium activated yttrium-gadolinium borate phosphor
  • Prepn. of europium activated yttrium-gadolinium borate phosphor
  • Prepn. of europium activated yttrium-gadolinium borate phosphor

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Embodiment Construction

[0030] specific implementation plan

[0031] Such as figure 1 Shown, the production process step of the present invention is: take by weighing diyttrium trioxide (Y 2 o 3 ) (99.99%) is 587.69 grams, gadolinium trioxide (Gd 2 o 3 ) (99.99%) is 110.77 grams, europium trioxide (Eu 2 o 3 ) (99.99%) is 40.92 grams. Will accurately weigh Y 2 o 3 、Gd 2 o 3 、Eu 2 o 3 Put into container, add 1.5 liters of 1: 1 nitric acid, place ultrasonic equipment, make raw material dissolve; The boric acid (HBO 3 ) (AR) 200.31 grams into the system, add 4.5 liters of distilled water, add trimethyl borate (AR) 553.85ml, under normal pressure, place in a water bath at constant temperature, control the temperature at 60°C-95°C, and make a gel liquid. The glue solution is placed in a microwave synthesis system (MMR-12MicroSYNTH), under the condition of condensation and reflux, it is reacted at a temperature of 60-95°C and the stirring speed is controlled at 100-...

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Abstract

The invention relates to a kind of method for producing yttrium and gadolinium borate fluorescent powder activated by europium, it combines microwave method, ultrasonic method and sol-gel method to produce yttrium and gadolinium borate fluorescent powder activated by Eu3+ (including naneo yttrium and gadolinium borate fluorescent powder activated by Eu3+), it breaks a new path for optimizing preparation producing craft. It adopts microwave radiatino technique and combines ultrasonic disperse technique in craft process of transform from sol to gel, dryness of gel and crystallization; in this way, it both keeps up advantages that the product produced by means of sol-gel has a small particle diameter and even distribution, and shorts the whole process of sol and gel greatly by taking advantage of character fast and high efficiency in microwave method, at the same time.

Description

technical field [0001] The present invention relates to high-efficiency fluorescent powder used in plasma displays and EL electroluminescent displays——europium (Eu 3+ ) activated yttrium-gadolinium borate phosphor (containing Eu 3+ Activated nano-yttrium-gadolinium borate phosphor), especially for the preparation of Eu 3+ Activated yttrium-gadolinium borate phosphors (containing Eu 3+ Activation method of nano-yttrium-gadolinium borate phosphor). Background technique [0002] A variety of flat panel display technologies dominate the field of information display with their small size, light weight and high quality. Each field of display technology application will provide several flat panel display technologies with competing space for application. This determines the diversity and inclusiveness of flat panel display technology. Representative flat-panel displays such as plasma displays (PDP) and electroluminescence displays (EL) that can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/77
CPCC09K11/7797
Inventor 袁曦明许永胜王永钱张继红
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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