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Glass containing rare earth ion doped lutetium iodide micro-crystals and preparation method of glass film

A technology of glass thin film and rare earth ion, which is applied in the field of preparation of glass and glass thin film, can solve problems such as device development limitations, and achieve the effects of overcoming incomplete uniformity, high doping concentration, and good luminous effect

Inactive Publication Date: 2016-02-10
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 containing rare earth ion doped lutetium iodide micro-crystals and preparation method of glass film
  • Glass containing rare earth ion doped lutetium iodide micro-crystals and preparation method of glass film
  • Glass containing rare earth ion doped lutetium iodide micro-crystals and preparation method of glass film

Examples

Experimental program
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Effect test

Embodiment 1

[0040] The preparation method of rare earth ion-doped lutetium iodide crystallite glass and glass film, comprising the following steps:

[0041] (1), will prepare the raw material composition by mole percent: ethyl orthosilicate: 73mol%, niobium ethoxide: 16mol%, lutetium iodide: 10mol%, cerium iodide: 1mol%, take by weighing the total amount of 20 grams The analytically pure raw materials for each preparation are ready for use;

[0042] (2), according to following mol ratio: both ethyl orthosilicate and niobium ethoxide sum: dehydrated alcohol: distilled water=1: 2.5: 1.6, weigh corresponding dehydrated alcohol and distilled water respectively, stand-by;

[0043] (3), take one-third of the dehydrated alcohol that is weighed in the step (2), dissolve the whole niobium ethoxide weighed in the step (1) into it, add acetylacetone quickly, the volume of niobium ethoxide and acetylacetone The ratio is 1: 1, and strong magnetic stirring is carried out, gradually dripping in the dis...

Embodiment 2

[0054] (1), basically the same as Example 1, the difference is that in step (1), the raw materials are prepared by the following mole percentages: ethyl orthosilicate: 74mol%, niobium ethoxide: 10mol%, lutetium iodide: 13mol%, Cerium iodide: 3 mol%, weigh the total amount of 20 grams of each analytically pure preparation raw material and set it aside; in step (8), the pulling speed of the glass substrate in the gel solution is controlled at 0.4 mm / s, and the pulling is repeated 2 times, the interval between each pulling is 15 minutes, and the coated film is dried at room temperature for 4 hours to obtain a glass film; in step (10), the temperature is first heated to 100° C. and kept for 1.5 hours to remove residual water. and ethanol, and then heated to 360°C for 30 minutes to remove residual organic matter. The heating rate for glass is 12°C per hour, the cooling rate is 20°C per hour, and the heating rate for glass film is 1 hour per hour. 40 ° C, the cooling rate is 50 ° C ...

Embodiment 3

[0057] (1), it is basically the same as Example 1, the difference is that in step (1), the raw materials are prepared according to the following mole percentages: ethyl orthosilicate: 75mol%, niobium ethoxide: 5mol%, lutetium iodide: 15mol%, Europium iodide: 5 mol%, weigh each preparation raw material with a total amount of 20 grams of analytical grade and set it aside for use; in step (8), the pulling speed of the glass substrate in the gel solution is controlled at 1 mm / s, and the extraction is repeated. Pulling 5 times, the interval between each pulling is 15 minutes, and the coated film is dried at room temperature for 4 hours to obtain a glass film; in step (10), the temperature is first heated to 100° C. and kept for 2 hours to remove residual water and ethanol, and then heated to 360°C for 40 minutes to remove residual organic matter, the heating rate for glass was 15°C per hour, the cooling rate was 20°C per hour, and the heating rate for glass film was 10°C per hour. ...

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Abstract

The invention discloses glass containing rare earth ion doped lutetium iodide micro-crystals and a preparation method of a glass film. The glass is characterized by being prepared from the following raw materials by mole percent: 73-75mol% of ethyl orthosilicate, 5-16mol% of niobium ethoxide, 10-15mol% of lutetium iodide and 1-5mol% of rare earth iodide, wherein rare earth iodide is one of cerium iodide, europium iodide and terbium iodide. The glass has the advantages as follows: a sol-gel method is a low-temperature wet-chemical method glass preparation technology, and the glass is obtained through hydrolysis and polymerization chemical reaction of precursor raw materials, so that the glass can be prepared into a film material at a certain liquid viscosity and iodide raw materials are prevented from being decomposed and volatilized through low-temperature synthesis conditions; the glass prepared through the sol-gel method can generate a certain micropores in the material due to volatilization and decomposition of the solvent, and the micropores provide the good environment for generation of nano iodide micro-crystals, so that defects that crystallization particles are nonuniform and glass devitrification occurs due to incomplete uniformity of glass smelting chemical constituents and crystallization processing temperature can be overcome to a certain extent.

Description

technical field [0001] The invention relates to a preparation technology of glass and glass films containing crystallites, in particular to a wet chemical preparation method of glass and glass films containing rare earth ions doped with lutetium iodide crystallites used as scintillation materials. Background technique [0002] Scintillation material is a kind of optical functional material that can emit visible light under the excitation of high-energy rays (such as x-rays, gamma 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 great demand for new high-performance scintillation materials. Excellent scintillation materials mainly have the following characteristics: high luminous efficiency, high material density, fast ...

Claims

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Application Information

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IPC IPC(8): C03C10/16
Inventor 冯治刚夏海平王成江东升张健何仕楠盛启国汤庆阳
Owner NINGBO UNIV
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