Preparation method of Pr<3+> doped (Yx La (1-x)) 2 O3 luminescent material

A technology of luminescent material and doping amount, which is applied in the field of preparation of Pr3+ doped 2O3-based phosphors and transparent ceramics, can solve the problems such as the great influence of energy level structure, achieve good optical performance, high light output, and improve light output Effect

Inactive Publication Date: 2010-03-10
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

PR 3+ The 4f electrons are shielded by the outer 5s and 5p electrons, and their 4f 2 The energy level structure of the electronic configuration is not greatly

Method used

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  • Preparation method of Pr&lt;3+&gt; doped (Yx La (1-x)) 2 O3 luminescent material

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Experimental program
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Effect test

Embodiment 1

[0031] In the present embodiment, preparation (Y 1x La x ) 2 o 3 :Pr 3+ The specific process of phosphor powder and flashing ceramics is as follows:

[0032] 1. (Y 1-x La x ) 2 o 3 :Pr 3+ Powder Preparation Process

[0033] (a) Solid phase method

[0034] a. Using high-purity Pr 6 o 11 (99.99%), Y 2 o 3 (99.99%) and La 2 o 3 (99.99%) as raw material, with Y 2 o 3 as the matrix material, La 2 o 3 As an adjuvant, Pr 3+ as the active ion. The mass ratio of the three is according to the chemical formula Y 2-2x-2y La 2x PR 2y o 3 Based on, x=0.1 in the formula, y=0.02; La 2 o 3 The doping amount is 10at.% (mole percent), Pr 6 o 11 The doping amount is 2at%;

[0035]b. Mix the prepared powders, ball mill them in ethanol for 20 hours, and dry them at 95°C;

[0036] c. Then place it in a calciner for pretreatment at 1100°C for 5 hours; put it in a ball mill for 20 hours, then dry it at 95°C and granulate it to obtain Y 2-2x-2y La 2x PR 2y o 3 Nano po...

Embodiment 2

[0048] The process step of the present embodiment is basically the same as the above-mentioned embodiment 1, the difference is:

[0049] Y 2-2x-2y La 2x PR 2y o 3 In the formula, x=0.1, y=0.005; La 2 o 3 The doping amount is 10at.% (mole percent), Pr 6 o 11 The doping amount is 0.5at%; the firing temperature of the powder in the muffle furnace is 900°C; the sintering temperature of the ceramic is 1650°C; finally Y 2-2x-2y La 2x PR 2y o 3 Phosphor and ceramic scintillation materials.

Embodiment 3

[0051] The process step of the present embodiment is basically the same as the above-mentioned embodiment 1, the difference is:

[0052] Y 2-2x-2y La 2x PR 2y o 3 In the formula, x=0.1, y=0.05; La 2 o 3 The doping amount is 10at.% (mole percent), Pr 6 o 11 The doping amount is 5at%; the firing temperature of the powder in the muffle furnace is 900°C; the sintering temperature of the ceramic is 1650°C; finally Y 2-2x-2y La 2x PR 2y o 3 Phosphor and ceramic scintillation materials.

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Abstract

The invention relates to a preparation method of Pr<3+> doped (Yx La (1-x)) 2 O3 luminescent material, namely, a preparation method of Pr<3+> doped (Yx La (1-x)) 2 O3-based fluorescent powder and transparent ceramic, belonging to the technical field of technique for manufacturing novel luminescent material and special type ceramic. The method takes high-purity Pr6O11 (99.99%), Y2O3 (99.99%) and La2O3 (99.99%) as raw materials, and adopts a solid phase method and a liquid phase method to prepare the (Y (1-x ) Lax) 2 O3: Pr<3+> fluorescent powder; by adopting the traditional ceramic sintering technique, the Pr<3+> doped yttrium lanthanum oxide transparent scintillating ceramic under the no-pressure reducing atmosphere and the vacuum condition, the temperature range of sintering is 1500-1800DEG C, and the time thereof is 3-30h. The fluorescent powder and the transparent scintillating ceramic which are prepared by the method have good optical property, and the transparent ceramic has higher transmission and luminescence as well as good scintillating performance.

Description

technical field [0001] The present invention relates to Pr 3+ Doping (Y x La 1-x ) 2 o 3 The invention discloses a method for preparing fluorescent powder and transparent ceramics, and belongs to the technical field of new fluorescent materials and special ceramics manufacturing technology. Background technique [0002] When rare earth elements are used as matrix components of luminescent (fluorescent) materials, or as activators, co-activators, sensitizers or dopants, such materials are generally collectively referred to as rare earth luminescent materials or rare earth fluorescent materials. With the advancement of rare earth separation and purification technology, and the promotion of related technologies, the research and application of rare earth luminescent materials will be significantly developed. After entering the 21st century, with the development and rise of some high-tech, the science and technology of rare earth luminescent materials have entered a new act...

Claims

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Application Information

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IPC IPC(8): C09K11/78C04B35/622C04B35/505
Inventor 杨秋红厉冰峰陆神洲张浩佳
Owner SHANGHAI UNIV
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