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Erbium-doped yttrrium lanthanum oxide luminescent material and preparation method thereof

A luminescent material, the technology of lanthanum yttrium oxide, which is applied in the field of Er3+ doped luminescent material and its preparation, can solve problems such as difficult to balance, and achieve the effects of low production temperature, energy saving, and excellent luminescent performance

Inactive Publication Date: 2016-01-06
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, for Er 3+ For doped materials, it is usually difficult to balance its up-conversion luminescence and 1.5-1.6 μm band near-infrared fluorescence. How to simultaneously increase the emission intensity of both is a scientific research problem that material workers are trying to solve.

Method used

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  • Erbium-doped yttrrium lanthanum oxide luminescent material and preparation method thereof
  • Erbium-doped yttrrium lanthanum oxide luminescent material and preparation method thereof
  • Erbium-doped yttrrium lanthanum oxide luminescent material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: (Er 0.02 Y 0.88 La 0.1 ) 2 O 3 preparation

[0032] Er(NO) with a concentration of 0.5 mol / L was used 3 ) 3 , Y(NO 3 ) 3 and La(NO 3 ) 3 The solution is the raw material, according to the chemical formula (Er 0.02 Y 0.88 La 0.1 ) 2 O 3 Accurately measure 4 ml of Er(NO 3 ) 3 solution, 176 ml Y(NO 3 ) 3 solution and 20 mL La(NO 3 ) 3 solution, mix and stir the above solution evenly; then add burning agent solid glycine, Er(NO 3 ) 3 , Y(NO 3 ) 3 and La(NO 3 ) 3 The ratio of the total molar amount of glycine to the molar amount of solid glycine is 1:2; stir on a magnetic stirrer at 80 °C to completely dissolve the solid glycine, forming a transparent mixed solution.

[0033] Then, the mixed solution was heated and dried in a constant temperature oven preheated to 120°C. When the solution turned into a transparent wet gel, the gel was put into a corundum crucible and transferred to a muffle furnace at 300°C. The gel appeared self-propaga...

Embodiment 2

[0039] Example 2: (Er 0.05 Y 0.87 La 0.08 ) 2 O 3 preparation

[0040] Er(NO) with a concentration of 0.5 mol / L was used 3 ) 3 , Y(NO 3 ) 3 and La(NO 3 ) 3 The solution is the raw material, according to the chemical formula (Er 0.05 Y 0.87 La 0.08 ) 2 O 3 Accurately measure 10 ml of Er(NO 3 ) 3 solution, 174 ml Y(NO 3 ) 3 solution and 16 mL La(NO 3 ) 3 solution, mix and stir the above solution evenly; add burning agent solid glycine, Er(NO 3 ) 3 , Y(NO 3 ) 3 and La(NO 3 ) 3 The ratio of the total molar amount of glycine to the molar amount of solid glycine was 1:4, and the solid glycine was completely dissolved by stirring on a magnetic stirrer at 70 °C to form a transparent solution.

[0041] Then, the mixed solution was heated and dried in a constant temperature oven preheated to 100°C. When the solution turned into a transparent wet gel, the gel was put into a corundum crucible and transferred to a muffle furnace at 400°C. The gel appeared self-pr...

Embodiment 3

[0046] Example 3: (Er 0.01 Y 0.89 La 0.1 ) 2 O 3 preparation

[0047] Er(NO) with a concentration of 0.5 mol / L was used 3 ) 3 , Y(NO 3 ) 3 and La(NO 3 ) 3 The solution is the raw material, according to the chemical formula (Er 0.01 Y 0.89 La 0.1 ) 2 O 3 Accurately measure 2 ml Er(NO 3 ) 3 solution, 178 ml Y(NO 3 ) 3 solution and 20 mL La(NO 3 ) 3 solution, mix and stir the above solution evenly; add burning agent solid citric acid, Er(NO 3 ) 3 , Y(NO 3 ) 3 and La(NO 3 ) 3 The ratio of the total molar amount of citric acid to the molar amount of solid citric acid is 1:2, and a transparent solution is formed after the solid citric acid is completely dissolved by stirring on a magnetic stirrer at 60 °C.

[0048] Then, the mixed solution was heated and dried in a constant temperature oven preheated to 80°C. When the solution turned into a transparent wet gel, the gel was put into a corundum crucible and transferred to a muffle furnace at 300°C. The gel a...

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Abstract

The invention discloses an erbium-doped yttrrium lanthanum oxide luminescent material and a preparation method thereof. The molecular formula of the luminescent material is (ErxY1-x-yLay)2O3, wherein 0<x<=0.05, 0.08<=y<=0.1. A low temperature gel-combustion method is used for preparing the erbium-doped yttrrium lanthanum oxide luminescent material, and the method comprises: a polymerization gelation of a nitrate solution and an incendiary agent, a low temperature spontaneous combustion of a gel and a high temperature calcination of a precursor. The erbium-doped yttrrium lanthanum oxide luminescent material has a good optical performance; because La<3+> is introduced, green upconversion fluorescence and 1.5-1.6 [mu]m near infrared emission intensity are simultaneously and substantially improved; the material is an ideal luminescent material and has the advantages of good chemical stability and heat stability, non-toxicity and non-radiation; the material can be applied in the fields of display, temperature sensor, biomarker, medical monitoring, high-precision measurement, etc.

Description

technical field [0001] The present invention relates to an Er 3+ A doped luminescent material and a preparation method thereof belong to the field of luminescent materials. Background technique [0002] Rare earth luminescent materials are basic application materials in the fields of green light source, display technology, optical communication and laser devices, and have important strategic significance for national economy, social development and national defense construction. Among the many rare earth ions, Er 3+ It has become a research focus in the field of luminescence and lasers because it can achieve upconversion luminescence and 1.5~1.6μm near-infrared emission. while La 3+ Since it does not emit light, it is generally considered to have no contribution to the luminous intensity of the material. Due to Er 3+ of 2 H 11 / 2 / 4 S 3 / 2 → 4 I 15 / 2 The transition enables green upconversion upon excitation by infrared radiation, so Er 3+ Doping materials have bee...

Claims

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Application Information

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IPC IPC(8): C09K11/78
Inventor 雷若姗王焕平徐时清杨清华田颖
Owner CHINA JILIANG UNIV
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