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Preparation method of a novel nanocomposite zinc oxide-based red fluorescent material

A technology of nanocomposite and fluorescent materials, which is applied in the field of preparation of new nanocomposite zinc oxide-based red fluorescent materials, can solve problems such as few reports of sharp red light emission, and achieve improved red light emission performance, synthesis process safety, light emission The effect of increasing the luminescence intensity

Active Publication Date: 2020-06-16
JILIN NORMAL UNIV
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Problems solved by technology

For example, Eu 3+ When ions are incorporated into the ZnO matrix, there will be energy transfer from the matrix to the rare earth ions, but there are few reports on the sharp red emission
But there is no research on ZnO / Eu 2 o 3 Report on Red Fluorescent Materials

Method used

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  • Preparation method of a novel nanocomposite zinc oxide-based red fluorescent material
  • Preparation method of a novel nanocomposite zinc oxide-based red fluorescent material
  • Preparation method of a novel nanocomposite zinc oxide-based red fluorescent material

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Embodiment Construction

[0019] The required raw materials of the present invention are as follows:

[0020] Zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O, Shenyang Sinopharm Chemical Reagent Co., Ltd.) is analytically pure;

[0021] Europium oxide (Eu 2 o 3 , Shenyang Sinopharm Group Chemical Reagent Co., Ltd.) was analytically pure;

[0022] Nitric acid (HNO3, Shenyang First Reagent Factory chemical reagent) is analytically pure;

[0023] Ammonium bicarbonate (NH 4 HCO 3 , Shenyang Sinopharm Group Chemical Reagent Co., Ltd.) was analytically pure;

[0024] 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, after cooling to room temperature, Pour into a weighing bottle and add deionized water to configure Eu(NO 3 ) 3 solution, shake well and set aside.

[0025] ②. Weigh Zn(NO 3 ) ...

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Abstract

The invention relates to a method for preparing a novel nano composite zinc oxide based red fluorescence material. According to the method, a kernel / shell nano structure is adopted, Zn(NO3)2.6H2O, Eu2O3, nitric acid and ammonium bicarbonate are taken as raw materials, and Eu2O3 of a shell layer is adopted as an 'energy storage center' in a ZnO medium, so that the energy transmission of the ZnO medium to Eu<3+> ions is effectively improved, and the red light emission performance of the Eu<3+> ions in the ZnO medium is greatly improved. Therefore, the red fluorescence material prepared by using the method is relatively applicable to harsh environments such as cold north, and can be widely applied to spacecraft coating pigments.

Description

technical field [0001] The invention belongs to a preparation method of a novel nanocomposite zinc oxide-based red fluorescent material, specifically a method for preparing a nanocomposite zinc oxide-based red fluorescent material. 2 o 3 Core / shell nanostructures to enhance Eu 3+ A method for ion red light emission efficiency. Background technique [0002] Red fluorescent materials are widely used in solid-state lighting sources, new flat-panel displays, military electronic components and other fields, and their mass fractions in red, green, and blue three-color phosphor systems are as high as 60-80%. However, among the three primary color display materials, red fluorescent materials are considered to be the weakest link, mainly because the transitions corresponding to red light emission are transitions with small energy gaps, which are difficult to match with the energy of the carrier transport layer. , cannot effectively recombine electrons and holes in the light-emitti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/78C09K11/02
CPCC09K11/02C09K11/773
Inventor 高铭杨景海刘惠莲李佳曹丽华
Owner JILIN NORMAL UNIV
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