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Glass film containing rare earth ion-doped Cs2LiYCl6 microcrystalline and preparation method of glass film

A technology of rare earth ions and glass films, which is applied in the field of glass films containing rare earth ions doped with Cs2LiYCl6 microcrystals and its preparation, can solve problems such as device limitations, achieve the effects of preventing decomposition and volatilization, and overcoming incomplete uniformity

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

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Problems solved by technology

Usually thin film 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 Cs2LiYCl6 microcrystalline and preparation method of glass film
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  • Glass film containing rare earth ion-doped Cs2LiYCl6 microcrystalline and preparation method of glass film

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Cs doped with rare earth ions 2 LiYCl 6 The preparation method of the glass thin film of crystallite comprises following specific steps:

[0044] (1), prepare raw materials in molar ratio: tetraethoxygermanium: aluminum sec-butoxide: trimethyl phosphate: cesium chloride: lithium chloride: yttrium chloride: cerium chloride=71: 20: 20: 16 : 8: 8: 1, taking by weighing a total amount of 30 grams of analytically pure raw materials for each preparation, stand-by;

[0045] (2), the hydrolysis of tetraethoxygermanium: the tetraethoxygermanium weighed in the step (1) is dissolved in dehydrated alcohol, and the mol ratio of dehydrated alcohol and tetraethoxygermanium is 2: 1, fast Add acetylacetone, the volume ratio of acetylacetone to tetraethoxygermanium is 0.6:1, and carry out strong magnetic stirring, gradually drop distilled water, the molar ratio of distilled water to tetraethoxygermanium is 0.6:1, carry out hydrolysis at room temperature React for 1 hour to make soluti...

Embodiment 2

[0056] It is basically the same as Example 1, except that in the step (1), the raw materials are prepared according to the following molar ratios: tetraethoxygermanium: aluminum sec-butoxide: trimethyl phosphate: cesium chloride: lithium chloride: chloride Yttrium: europium chloride=75: 10: 10: 24: 12: 12: 3, each raw material is weighed respectively; In the step (8), the pulling speed of the glass substrate in the gel solution is controlled at 1 mm / s, Repeat the pulling 5 times, each time the pulling interval is 15 minutes; in step (9), heat up to 100°C at a rate of 50°C per hour, and then heat up the furnace to 340°C at a rate of 50°C per hour; In step (10), gradually raise the temperature of the furnace to 650 ° C, and react at this temperature for 2 hours, and finally obtain the Eu-containing 3+ Ion-doped Cs 2 LiYCl 6 Microcrystalline 75GeO 2 -5Al 2 o 3 -5P 2 o 5 -12Cs 2 LiYCl 6 -3EuCl 3 System glass film

[0057] For prepared Eu-containing 3+ Ion-doped Cs 2 L...

Embodiment 3

[0059] It is basically the same as Example 1, except that in the step (1), the raw materials are prepared according to the following molar ratios: tetraethoxygermanium: aluminum sec-butoxide: trimethyl phosphate: cesium chloride: lithium chloride: chloride Yttrium: terbium chloride=73: 16: 14: 20: 10: 10: 2, each raw material is weighed respectively; In the step (8), the pulling speed of the glass substrate in the gel solution is controlled at 0.6 mm / s, Repeat the pulling 3 times, each pulling interval is 15 minutes; in step (9), heat up to 100°C at a rate of 40°C per hour, and then heat up the furnace to 340°C at a rate of 40°C per hour; In step (10), gradually raise the temperature of the furnace to 640° C., and react at this temperature for 3 hours. Finally get Tb 3+ Ion-doped Cs 2 LiYCl 6 Microcrystalline 73GeO 2 -8Al 2 o 3 -7P 2 o 5 -10Cs 2 LiYCl 6 -2TbCl 3 System glass film

[0060] For prepared Tb-containing 3+ Ion-doped Cs 2 LiYCl 6 The microcrystalline ...

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Abstract

The invention discloses a chemical constitution of a glass film containing rare earth ion-doped Cs2LiYCl6 microcrystalline and a sol-gel preparation method of the glass film. The glass film is characterized by comprising the following components by mol percent: 71mol%-75mol% of germanium dioxide, 5mol%-10mol% of aluminum sesquioxide, 5mol%-10mol% of phosphorus pentoxide, 8mol%-12mol% of Cs2LiYCl6 and 1mol%-3mol% of rare-earth chloride, wherein rare-earth chloride is one of cerium chloride, europium chloride or terbium chloride. The sol-gel preparation method has the advantages that sol-gel is a low-temperature wet chemical method glass preparation technique, and glass is prepared by virtue of hydrolysis and chemical polymerization reaction of precursor raw materials, and a film material can be prepared under certain liquid viscosity; by virtue of low temperature synthesis conditions, the decomposition and the volatilization of the chloride raw material can be effectively prevented.

Description

technical field [0001] The invention relates to a glass-ceramics film doped with a rare earth ion, in particular to a Cs doped with a rare earth ion used as a scintillation material 2 LiYCl 6 Microcrystalline glass thin film and its 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 produc...

Claims

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Application Information

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IPC IPC(8): C03C10/16
Inventor 江东升夏海平冯治刚王成张健盛启国何仕楠汤庆阳
Owner NINGBO UNIV
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