Preparation method of rare earth doped nano zirconia up-conversion phosphor powder

Abstract

The invention provides a preparation method of rare earth doped nano zirconia up-conversion phosphor powder. The preparation method comprises respectively dissolving Zr(NO3)4 and Zr(NO3)3 into deionized water according to 0.05-0.2:1 of the molar ratio of the Zr(NO3)3 to Zr(NO3)4, stirring to enable the solution to be clear to obtain mixed solution, adding citric acid with the ratio of the citric acid to cation in the mixed solution being 4:1, then adding ammonia water, regulating the pH value of the solution to be 6.5-7.5 and stirring to form collosol; drying the collosol at the temperature of 130 DEG C to form gel, sintering the gel at the temperature of 800 DEG C to obtain white precursor phosphor powder, and finally calcining the precursor phosphor powder at the temperature of 1100 DEG C-1400 DEG C to obtain the rare earth doped nano zirconia up-conversion phosphor powder. The preparation method is a scheme which can effectively weaken concentration quenching effect of high-doping rare earth ions and has the advantages of being simple in synthetic process, low in cost and the like. In addition, the luminescent efficiency of finished products is high.

Description

technical field [0001] The invention relates to a preparation method of a rare earth-doped nano-luminescent material. Background technique [0002] Since the laser has a high energy density, excellent collimation and monochromaticity, since the laser was invented in 1960, it has attracted widespread attention. High-performance lasers made of different materials and methods have always been The focus of people's research. At present, the technology of using rare earth as active ions to realize laser output is relatively mature, including Er, Nd plasma doping LiYF 4 、NaYF 4 , YAlO 3 and Y 3 Al 5 o 12 Laser output near 1000nm, 1310nm and 1550nm emitted by other crystals. The current development of rare earth lasers has two general directions: one is to develop into the infrared long-wave field that is safe for human eyes and has less loss in the atmosphere and optical fibers; the other is to develop into the short-wave field with higher energy. Among them, the research ...

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Problems solved by technology

However, when the doping concentration is too high, due to the shortening of the distance between the rare earth ions and the strengthening of the interaction, the rare earth ions at a high energy level can easily transfer their energy to the host material through surface defects, thereby reducing the fluorescence emission intensity, which is the concentration Quenching phenomenon

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