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Method for improving characteristic luminescent peak intensity of Eu ions in ZnO matrix

A peak intensity and ion technology, applied in the field of improving energy transport efficiency between ZnO matrix and Eu ions, can solve problems such as easy aging, and achieve the effects of improving luminous intensity, safe synthesis process and simple operation.

Inactive Publication Date: 2013-12-18
JILIN NORMAL UNIV
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Problems solved by technology

However, organic matter (PVP) is prone to aging under high temperature and strong ultraviolet radiation
In order to overcome the shortcomings of the traditional high-temperature sintering method to prepare rare earth-doped ZnO luminescent materials

Method used

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  • Method for improving characteristic luminescent peak intensity of Eu ions in ZnO matrix
  • Method for improving characteristic luminescent peak intensity of Eu ions in ZnO matrix
  • Method for improving characteristic luminescent peak intensity of Eu ions in ZnO matrix

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Embodiment Construction

[0026] The required raw materials of the present invention are as follows:

[0027] Zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O, Shenyang Sinopharm Chemical Reagent Co., Ltd.) was analytically pure;

[0028] Europium oxide (Eu 2 o 3 , Shenyang Sinopharm Group Chemical Reagent Co., Ltd.) was analytically pure;

[0029] Nitric acid (HNO 3 , Shenyang No. 1 Reagent Factory chemical reagent) is analytically pure;

[0030] Ammonium bicarbonate (NH 4 HCO 3 , Shenyang Sinopharm Group Chemical Reagent Co., Ltd.) was analytically pure;

[0031] Magnesium nitrate (Mg(NO 3 ) 2 ·6H 2 O, Shenyang Sinopharm Chemical Reagent Co., Ltd.) was analytically pure.

[0032] ① Take (0.176g) Eu 2 o 3 Soluble in (21g≈15mL) HNO 3 (mass fraction is 65.0% ~ 68.0%), dissolve after heating and stirring for about 10 minutes to form a viscous liquid, add deionized water and continue heating to evaporate excess nitric acid until the pH value is neutral, cool After reaching room temperature, pour it in...

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Abstract

The invention relates to a method for improving the characteristic luminescent peak intensity of Eu ions in a ZnO matrix. The method employs a precipitation technique, adopts Mg(NO3)3.6H2O, Zn(NO3)2.6H2O, Eu2O3, nitric acid and ammonium bicarbonate as raw materials, and the mole ratio of the ammonium bicarbonate to the sum of Eu<3+>, Mg<2+> and Zn<2+> is 1:1. By utilizing magnesium ions to serve as an energy storage center in the ZnO matrix, the energy transfer from the ZnO matrix to the Eu ions is effectively improved. Therefore, the intensity of an Eu ion characteristic luminescent peak in the ZnO matrix is greatly enhanced. Thus, the red fluorescent material prepared in the invention is more suitable for the cold north, the hot south and plateau areas with strong ultraviolet radiation, and also can be widely used in spacecraft coating pigments.

Description

technical field [0001] The invention belongs to a method for increasing the characteristic peak intensity of Eu ions in a ZnO matrix, specifically a method for improving energy transport efficiency between ZnO matrix and Eu ions by using additives. Background technique [0002] With the development of new flat panel displays and solid-state lighting sources, the demand for new high-efficiency luminescent powders is increasing. The luminescence phenomenon of rare earth ions in solids has become an important part of luminescence. The research on rare earth doped luminescent materials has attracted more and more attention. On the one hand, the reason is that rare earth luminescent materials have been widely used in high-tech fields such as color TVs, lighting sources, X-ray intensifying screens, and various display devices; The reason is that this type of material is more suitable for theoretical research on luminescence than non-rare earth luminescent materials. [0003] Ther...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/55
Inventor 高铭杨景海杨丽丽张永军范厚刚
Owner JILIN NORMAL UNIV
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