Unlock instant, AI-driven research and patent intelligence for your innovation.

Glass film containing rare-earth-ion-doped Cs2LiLaI6 microcrystalline and preparation method thereof

A technology of rare earth ions and glass thin films, applied in the field of glass thin films, can solve problems such as device development limitations, achieve superior flickering, overcome incomplete uniformity, and prevent decomposition and volatilization effects

Inactive Publication Date: 2016-02-03
NINGBO UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually thin film materials are one of 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Glass film containing rare-earth-ion-doped Cs2LiLaI6 microcrystalline and preparation method thereof
  • Glass film containing rare-earth-ion-doped Cs2LiLaI6 microcrystalline and preparation method thereof
  • Glass film containing rare-earth-ion-doped Cs2LiLaI6 microcrystalline and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0044] (1), prepare the raw materials in molar ratio: ethyl orthosilicate: niobium ethoxide: gallium ethoxide: cesium iodide: lithium iodide: lanthanum iodide: cerium iodide = 66: 30: 20: 16: 8: 8 : 1, taking by weighing a total amount of analytically pure raw materials of 30 grams, stand-by;

[0045] (2), the hydrolysis of gallium ethoxide: dissolve the gallium ethoxide weighed in step (1) in dehydrated alcohol, the molar ratio of dehydrated alcohol and gallium ethoxide is 2.5: 1, add acetylacetone rapidly, acetylacetone and gallium ethoxide The volume ratio of the solution is 0.8:1, and strong magnetic stirring is carried out, and distilled water is gradually added dropwise. The molar ratio of distilled water to gallium ethyl alcohol is 0.6:1, and the hydrolysis reaction is carried out at room temperature for 1 hour to prepare so...

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: ethyl orthosilicate: niobium ethylate: gallium ethylate: cesium iodide: lithium iodide: lanthanum iodide: iodide Europium=68:24:10:24:12:12:3, each preparation raw material is weighed respectively; In step (8), the pulling speed of the glass substrate in the gel solution is controlled at 1 mm / s, and the pulling speed is repeated 5 times, each pulling interval is 15 minutes; in step (9), be warming up to 100 ℃ with the rate of 50 ℃ per hour, then heat up the furnace to 340 ℃ with the rate of 50 ℃ per hour; ), gradually raise the temperature of the furnace to 550°C, and react at this temperature for 2 hours to obtain Eu-containing 3+ Ion-doped Cs 2 LiLaI 6 Microcrystalline 68SiO 2 -12Nb 2 o s -5Ga 2 o 3 -12Cs 2 LiLaI 6 -3EuI 3 System glass film.

[0057] For prepared Eu-containing 3+ Ion-doped Cs 2 LiLaI 6 Spectral prope...

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: ethyl orthosilicate: niobium ethylate: gallium ethylate: cesium iodide: lithium iodide: lanthanum iodide: iodide Terbium=67:26:16:20:10:10:2, weigh each preparation raw material respectively; in step (8), the pulling speed of the glass substrate in the gel solution is controlled at 0.6 mm / s, and the pulling speed is repeated 3 times, each pulling interval is 15 minutes; in step (9), the rate of 40 ℃ per hour is heated to 100 ℃, and then the furnace is heated to 340 ℃ with the rate of 40 ℃ per hour; in step (10 ), gradually raise the temperature of the furnace to 540°C, and react at this temperature for 3 hours to obtain Tb-containing 3+ Ion-doped Cs 2 LiLaI 6 Microcrystalline 67SiO 2 -13Nb 2 o s -8Ga 2 o 3 -10Cs 2 LiLaI 6 -2TbI 3 System glass film.

[0060] For prepared Tb-containing 3+ Ion-doped Cs 2 LiLaI 6 Spectral ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A disclosed glass film containing rare-earth-ion-doped Cs2LiLaI6 microcrystalline is characterized in that the glass film comprises the following compositions in percent by mole: 66-68 mol% of silicon dioxide, 12-15 mol% of niobium pentoxide, 5-10 mol% of gallium(III) oxide, 8-12 mol% of Cs2LiLaI6, and 1-3 mol% of a rare-earth iodide, wherein the rare-earth iodide is one of cerium iodide, europium iodide and terbium iodide. The advantages comprise that a sol-gel technology is a low-temperature wet-chemical-process glass preparation technology, the glass is obtained through hydrolysis of a precursor raw material and a polymerization chemical reaction process, the film material can be prepared under a certain liquid viscosity condition, and the low-temperature synthesis condition is capable of effectively preventing the iodide raw material from being decomposed and volatilized; and because of volatilization and decomposition of the solvent, certain micropores are generated in the glass prepared through the sol-gel method, and the micropores provide good environment for generation of nanometer iodide microcrystalline, and thus crystallized-particle nonuniformity and glass devitrification caused by incomplete uniformity of melt-glass chemical compositions and crystallization processing temperature are overcome to a certain degree.

Description

technical field [0001] The invention relates to a glass film containing a rare earth ion-doped microcrystal, in particular to a rare earth ion-doped Cs used as a scintillation material 2 LiLaI 6 Microcrystalline glass film and its sol-gel wet chemical 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 resist...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/16
Inventor 何仕楠夏海平冯治刚王成盛启国江东升汤庆阳张健
Owner NINGBO UNIV