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Red fluorescent powder for PDP (Plasma Display Panel) and preparation method thereof

A red fluorescent powder, selected technology, applied in the direction of chemical instruments and methods, luminescent materials, etc., can solve the problems of red fluorescent powder long afterglow, environmental pollution, toxic synthetic raw materials, etc., achieve reduction of afterglow time, simple preparation process, easy to use The effect of industrial production

Inactive Publication Date: 2012-07-18
SICHUAN COC DISPLAY DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide a red fluorescent powder for PDP and its preparation method to solve the technical problems in the prior art that the red fluorescent powder has a long afterglow, the synthetic raw materials are toxic, and the preparation process is easy to pollute the environment

Method used

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  • Red fluorescent powder for PDP (Plasma Display Panel) and preparation method thereof
  • Red fluorescent powder for PDP (Plasma Display Panel) and preparation method thereof
  • Red fluorescent powder for PDP (Plasma Display Panel) and preparation method thereof

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preparation example Construction

[0019] Preferably, RE is selected from La 3+ , Sc 3+ , Gd 3+ , Lu 3+ One or more of these ions have the advantage of being able to effectively adjust the size of the matrix crystal lattice, sensitize the luminescence, and at the same time not affect the luminous color of the phosphor. Preferably, R is selected from Li + , Na + , K + , Rb + , Cs + One or more of these ions have the advantage of being able to effectively adjust the size of the matrix crystal lattice, sensitize the luminescence, and at the same time not affect the luminous color of the phosphor. According to another aspect of the present invention, according to a typical embodiment of the present invention, the preparation method of the red phosphor for PDP includes the following steps: 1) According to the chemical formula (Y 1-x-y-z Eu x RE y R z ) 2 O 3 The molar ratio of each element in is called Y 2 O 3 , Eu 2 O 3 , RE 2 O 3 And R-containing compounds, where 0.005≤x≤0.40, 0.00≤y≤0.40, 0.005≤z≤0.10, and the R-con...

Embodiment 1

[0023] Weigh yttrium oxide (Y 2 O 3 )0.0064mol, gadolinium oxide (Gd 2 O 3 )0.0025mol, europium oxide (Eu 2 O 3 )0.0005mol, lithium carbonate (Li 2 CO 3 ) 0.0006mol, fully ground in an agate mortar and mixed uniformly, sintered at 1300°C for 3 hours, cooled to room temperature, the sample is taken out and ground, washed with deionized water, filtered, and dried to obtain the final product.

Embodiment 2

[0025] Weigh yttrium oxide (Y 2 O 3 )0.0064mol, lanthanum oxide (La 2 O 3 )0.0025mol, europium oxide (Eu 2 O 3 )0.0005mol, lithium carbonate (Li 2 CO 3 ) 0.0006 mol, fully ground in an agate mortar and mixed uniformly, sintered at 1100°C for 5 hours, cooled to room temperature, the sample is taken out and ground, washed with deionized water, filtered, and dried to obtain the final product.

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Abstract

The invention discloses a red fluorescent powder for a PDP (Plasma Display Panel) and a preparation method thereof. The chemical formula of the red fluorescent powder is (Y1-x-y-zEuxREyRz)2O3, wherein x is not less than 0.005 and not more than 0.40, y is not less than 0.005 and not more than 0.40, z is not less than 0.005 and not more than 0.10, RE is rare-earth metal and R is alkali metal. The main light-emitting ion in the red fluorescent powder disclosed by the invention is Eu<3+>. Under the excitation of vacuum ultraviolet (VUV) light, after absorbing a certain amount of energy, the red fluorescent powder can transfer the energy to the Eu<3+>; the Eu<3+> produces red emission and an auxiliary ion R results in lattice distortion of the red fluorescent powder, so that the afterglow time of the Eu<3+> can be shortened effectively; moreover, the raw material for synthesis of the red fluorescent powder is non-toxic, the preparation process is simple and the industry production is easily realized.

Description

Technical field [0001] The present invention relates to the field of preparation of gas discharge devices, in particular to a red phosphor for PDP and a preparation method thereof. Background technique [0002] Plasma Display Panel (Plasma Display Panel) is a kind of Xe-based rare gas and ultraviolet (mainly at 147 nanometers and 172 nanometers) generated by the plasma discharge of a xenon (Xe)-based rare gas and a mixed gas to excite the three primary color phosphors to emit light under the control of a driving circuit. A type of flat panel display technology. PDP has become an important large-screen and ultra-thin display method due to its wide viewing angle, long life, fast refresh speed, high light efficiency and brightness, easy production of large screens, and wide working range. one. [0003] In recent years, with the development of plasma flat panel display devices in the direction of high-definition and three-dimensional display (3D), higher requirements have been placed ...

Claims

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Application Information

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IPC IPC(8): C09K11/78
Inventor 田梓峰
Owner SICHUAN COC DISPLAY DEVICES
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