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Glass film containing rare earth ion doped K2LaCl5 microcrystal and preparation method thereof

A rare earth ion and glass thin film technology, applied in the field of rare earth ion doped K2LaCl5 microcrystalline glass thin film and its sol-gel preparation, can solve problems such as device development limitations, overcome incomplete uniformity, prevent decomposition and volatilization Effect

Inactive Publication Date: 2016-03-09
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually thin film and fibrous materials are the most suitable raw materials for making such devices, so the current form of scintillation materials will have great restrictions on the development of future devices

Method used

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  • Glass film containing rare earth ion doped K2LaCl5 microcrystal and preparation method thereof
  • Glass film containing rare earth ion doped K2LaCl5 microcrystal and preparation method thereof
  • Glass film containing rare earth ion doped K2LaCl5 microcrystal and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Doped with rare earth ions K 2 LaCl 5 The preparation method of the glass thin film of crystallite comprises the following specific steps:

[0040] (1), prepare the raw materials in molar ratio: tri-n-butyl borate: aluminum sec-butoxide: potassium chloride: lanthanum chloride: cerium chloride = 156: 30: 12: 6: 1, weigh the total amount to be 30 Each preparation raw material of the analytical purity of gram, stand-by;

[0041] (2), the hydrolysis of tri-n-butyl borate: the tri-n-butyl borate weighed in the step (1) is dissolved in dehydrated alcohol, and the mol ratio of dehydrated alcohol and tri-n-butyl borate is 2.5: 1, fast Add acetylacetone, the volume ratio of tri-n-butyl borate to acetylacetone is 0.8:1, and carry out strong magnetic stirring, gradually drop distilled water, the molar ratio of distilled water to tri-n-butyl borate is 0.6:1, adjust with concentrated nitric acid The pH value reaches 4-5, and the hydrolysis reaction is carried out at room temperat...

Embodiment 2

[0051] It is basically the same as Example 1, except that in the step (1), the raw materials are prepared according to the following molar ratio: tri-n-butyl borate: aluminum sec-butoxide: potassium chloride: lanthanum chloride: europium chloride=156:16 : 22: 11: 3, each preparation raw material is weighed respectively; In the step (7), the pulling speed of the glass substrate in the gel solution is controlled at 1 mm / s, and the pulling is repeated 5 times, and the interval between each pulling is For 15 minutes; in step (8), heat up to 100°C at a rate of 50°C per hour, then heat up the furnace to 340°C at a rate of 50°C per hour; in step (9), gradually heat up the furnace to 620°C , and reacted at this temperature for 2 hours, and finally obtained the Eu 3+ Ion-doped K 2 LaCl 5 Microcrystalline 78B 2 o 3 -8Al 2 o 3 -11K 2 LaCl 5 -3EuCl 3 System glass film.

[0052] For prepared Eu-containing 3+ Ion-doped K 2 LaCl 5 The microcrystalline glass film was tested for p...

Embodiment 3

[0054] It is basically the same as Example 1, except that in the step (1), the raw materials are prepared according to the following molar ratio: tri-n-butyl borate: aluminum sec-butoxide: potassium chloride: lanthanum chloride: terbium chloride=156:24 : 16: 8: 2, each raw material is weighed respectively; In the step (7), the pulling speed of the glass substrate in the gel solution is controlled at 0.6 mm / s, and the pulling is repeated 3 times, and the pulling interval time is 15 minutes; In step (8), heat up to 100°C at a rate of 40°C per hour, then heat up the furnace to 340°C at a rate of 40°C per hour; in step (10), gradually heat up the furnace to 610°C, And react at this temperature for 3 hours, and finally get the Tb-containing 3+ Ion-doped K 2 LaCl 5 Microcrystalline 78B 2 o 3 -12Al 2 o 3 -8K 2 LaCl 5 -2TbCl 3 System glass film.

[0055] For prepared Tb-containing 3+ Ion-doped K 2 LaCl 5 The microcrystalline glass film was tested for performance, and the ...

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Abstract

The invention discloses a glass film containing rare earth ion doped K2LaCl5 microcrystal and a preparation method thereof. The glass film is characterized by comprising the following components in percentage by mole: 78 percent of diboron trioxide, 8-15 percent of aluminum oxide, 6-11 percent of K2LaCl5 and 1-3 percent of a rare-earth chloride, wherein the rare-earth chloride refers to one of cerium chloride, europium chloride or terbium chloride. The glass film disclosed by the invention has the advantages that sol-gel refers to a low-temperature wet chemistry method glass preparation technology, and glass is obtained by precursor material hydrolysis and polymerization reaction process, and therefore, a film material can be prepared at a certain liquid viscosity. Moreover, due to low-temperature synthesis condition, decomposition and volatilization of chloride raw materials can be effectively prevented. Due to volatilization and decomposition of solvents, the glass prepared by the sol-gel method generates a certain micro-pores in the materials, and the micro-pores provide a good environment for generating nano chloride microcrystal, so that the phenomenon that non-uniformity of crystallization particles and glass devitrification are caused by chemical constituents of the melted glass and incomplete uniformity of crystallization treatment temperature can be avoided to a certain degree.

Description

technical field [0001] The invention relates to a rare earth ion-doped microcrystalline glass film, in particular to a rare earth ion-doped K 2 LaCl 5 Microcrystalline glass film and its sol-gel preparation method. Background technique [0002] Scintillation material is a photofunctional material that can emit visible light under the excitation of high-energy rays (such as x-rays, γ-rays) or other radioactive particles, and can be widely used in nuclear medicine diagnosis, security inspection, anti-terrorism, high-energy physics and geological exploration and other fields. In recent years, with the rapid development of fields such as medical imaging and security inspection, there is a large demand for new scintillation materials with high performance. Excellent scintillation materials mainly have the following properties: high luminous efficiency, high material density, fast fluorescence decay, good radiation resistance and low production cost. [0003] As far as the cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/16
CPCC03C4/12C03C10/16C03C2203/20C03C2203/26C03C2203/52
Inventor 冯治刚夏海平盛启国江东升王成张健何仕楠汤庆阳
Owner NINGBO UNIV
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