K2LaI5-doped glass film containing rare earth irons and preparation method of K2LaI5-doped glass film

Abstract

The invention discloses a K2LaI5-doped glass film containing rare earth irons and a preparation method of the K2LaI5-doped glass film. The K2LaI5-doped glass film containing rare earth irons is characterized by comprising the following components in percentage by mole: 69-72mol% of niobium pentoxide, 10-20mol% of aluminum oxide, 10-14mol% of K2LaI5 and 1-4mol% of rare earth iodide, wherein the rare earth iodide is one of cerium iodide, europium iodide, terbium iodide and praseodymium iodide. The K2LaI5-doped glass film containing rare earth irons has the advantages that a sol-gel method is a technology for preparing glass through a low-temperature wet-chemical method, and glass is obtained through the hydrolysis of a precursor raw material and a chemical polymerization reaction process, so that the glass can be prepared into a film material under certain liquid viscosity, and the iodide raw materials can be effectively prevented from being decomposed and volatilized under a low-temperature synthesis condition; due to the volatilization and decomposition of the solvent, the glass prepared by using the sol-gel method can generate certain micropores in the material, and the micropores provide good environments for generating nanometer iodide microcrystallines, so that the defects of crystallized particle nonuniformity and glass devitrification caused by nonuniformity of chemical components of the molten glass and crystallization treatment temperature can be overcome to a certain extent.

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 LaI 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 curr...

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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

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