Zirconium-ytterbium-holmium tri-doped lithium niobate crystal high-upconversion luminescent material and method for preparing same

A luminescent material, three-doping technology, applied in the directions of luminescent material, polycrystalline material growth, crystal growth, etc., can solve the problems of weak light damage resistance and low luminous efficiency, and achieve the effect of improving light damage resistance.

Inactive Publication Date: 2012-09-19
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is in order to solve existing LiNbO 3 Aiming at the technical problems of low luminous efficiency and weak light damage resistance of Ho crystal, a high up-conversion luminescent material and its preparation method of zirconium, ytterbium, holmium and three-doped lithium niobate crystals are provided

Method used

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  • Zirconium-ytterbium-holmium tri-doped lithium niobate crystal high-upconversion luminescent material and method for preparing same
  • Zirconium-ytterbium-holmium tri-doped lithium niobate crystal high-upconversion luminescent material and method for preparing same
  • Zirconium-ytterbium-holmium tri-doped lithium niobate crystal high-upconversion luminescent material and method for preparing same

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specific Embodiment approach 1

[0016] Specific implementation mode one: In this implementation mode, zirconium, ytterbium, holmium and three doped lithium niobate crystals with high up-conversion luminescent material are made of Li 2 CO 3 , Nb 2 o 5 , ZrO 2 , Yb 2 o 3 and Ho 2 o 3 Made, zirconium, ytterbium, holmium three-doped lithium niobate crystal high up-conversion luminescent material, the molar ratio of Li element to Nb element is 0.946:1, the mole percentage of Yb element is 1%, and the mole percentage of Ho element is The mole percentage of Zr element is 0-6%.

specific Embodiment approach 2

[0017] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the Li 2 CO 3 , Nb 2 o 5 , ZrO 2 , Yb 2 o 3 and Ho 2 o 3 The purity is 99.999%. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0018] Embodiment 3: This embodiment is different from Embodiment 1 or Embodiment 2 in that the mole percentage of the Zr element is 2%. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a luminescent material and a preparation method thereof, particularly relates to a zirconium-ytterbium-holmium tri-doped lithium niobate crystal high-upconversion luminescent material and a method for preparing the same, and aims to solve the technical problems of low luminous efficiency and poor light damage resistance of existing LiNbO3:Ho crystal. The zirconium-ytterbium-holmium tri-doped lithium niobate crystal high-upconversion luminescent material is made of Li2CO3, Nb2O5, ZrO2, Yb2O3 and Ho2O3. The preparation method includes: weighing, mixing, presintering, seeding, shoulder expanding, isometric growing and crystal polarizing, so that the zirconium-ytterbium-holmium tri-doped lithium niobate crystal high-upconversion luminescent material can be obtained. The light damage resistance of the crystal is greatly improved when 2mol%-6mol% ZrO is doped in the zirconium-ytterbium-holmium tri-doped lithium niobate crystal high-upconversion luminescent material, and improved by three orders of magnitude as compared with that of crystal with 0mol% ZrO doped, and the upconversion luminescence intensity of the doped crystal is gradually improved along with increase of Zr ionic concentration.

Description

technical field [0001] The invention relates to a luminescent material and a preparation method thereof. Background technique [0002] Lithium niobate (LiNbO 3 ) crystal is an important synthetic multifunctional crystal. This is due to the LiNbO 3 The crystal itself has excellent comprehensive properties such as piezoelectricity, pyroelectricity, ferroelectricity, linearity and nonlinearity, and has shown its talents in the field of engineering applications. It is often called "versatile" and "clever" crystals. For decades, people have been interested in LiNbO 3 A lot of research has been done on crystals, especially in recent years for LiNbO 3 The application research of crystal is more in-depth, among which the LiNbO 3 The research on the laser properties of crystals is gradually becoming one of the research hotspots. In recent years, the upconversion luminescence of holmium (Ho) has gradually attracted people's attention. 3+ ) has a series of metastable energy leve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78C30B29/30C30B15/20
Inventor 范叶霞夏士兴俞泽民
Owner HARBIN UNIV OF SCI & TECH
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