Preparation method of zinc-doped lutetium aluminum garnets

Abstract

The invention belongs to the technical field of light-emitting materials and particularly relates to a preparation method of zinc-doped lutetium aluminum garnets. The preparation method comprises thefollowing steps: (1) adding high-purity lutetium trioxide powder and aluminum trioxide powder into absolute ethyl alcohol, carrying out ultrasonic cleaning for 20-50 minutes, and drying, so as to obtain a mixture; (2) adding the mixture into a hydrochloric acid solution, and stirring until the mixture is completely dissolved, so as to obtain a mixed solution; (3) adding zinc chloride and hydroxy propyl cellulose into the mixed solution, and uniformly stirring, so as to obtain a dispersed mixed solution; (4) slowly introducing carbon dioxide into the dispersed mixed solution until no precipitate is generated, introducing ammonia gas until no precipitate is generated, carrying out ultrasonic filtration, repeatedly washing with absolute ethyl alcohol, and drying, so as to obtain a mixed precipitate; and (5) carrying out constant-temperature drying on the mixed precipitate for 4-8 hours, cooling, crushing into powder through ball milling, and calcining, so as to obtain the zinc-doped lutetium aluminum garnets. According to the preparation method, the technical blank of the zinc-doped lutetium aluminum garnets is solved, and a new doping manner for lutetium aluminum garnets is provided.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials, and in particular relates to a preparation method of zinc-doped lutetium aluminum garnet. Background technique [0002] Lu 2 o 3 -Al 2 o 3 The system is based on Y 2 o 3 -Al 2 o 3 developed on the basis of the system. due to Y 2 o 3 -Al 2 o 3 - Existing in the system such as YAG (yttrium aluminum garnet, Y 3 Al 5 o 12 ) and YAP (yttrium aluminate, YAlO 3 ) These two phases have become the most commonly used matrix materials due to their good physical and chemical properties and optical properties. People prepare high-performance laser or scintillation materials by doping active ions such as Nd, Yb, and Ce. Such as commonly used Nd: YAG and Yb: YAG laser crystals, Ce: YAP scintillation crystals. At present, people are also studying the scintillation properties of Ce:YAG and Yb:YAG. But with the development of science and technology, YAP and YAG have relatively low ...

AI Technical Summary

Problems solved by technology

[0003] At present, the relevant domestic research is mainly on the preparation of lutetium silicate transparent ceramics from the Institute of Silicate. Although relatively high transparency has been achieved, due to the refraction and absorption of light by the grain boundaries of the polycrystalline ceramic body, its optical characteristics are relatively low. In terms of crystals, there is still a large gap

However, domestic related crystal research focuses on the growth of lutetium aluminate crystals, but due to the 2 o 3 -Al 2 o 3 There are three phases in the system at the same time, and the lutetium aluminate phase is a high-temperature stable phase, and compared with the thermodynamically unstable phase at room temperature, it is usually easy to form other phases during growth and it is difficult to grow large-sized crystals, and it is easy to to crack