Mg doped zinc oxide luminescent nanoparticle and the preparation method thereof

Abstract

The invention belongs to the technical field of nanometer material, particularly relates to a Mg ion doped zinc oxide luminescent nanoparticle and the preparation method thereof. The main component of the nanoparticle is ZnO, and Mg ions are uniformly distributed inside ZnO; controlling the Mg content in ZnO nanoparticle can enable the nanoparticle to turn from the crystalline state into the non-crystalline state, so that the high efficiency luminescence of ZnO nanoparticle in a visible region can be realized; meanwhile, the luminescence wavelength of the ZnO nanoparticle is modulated from that of yellow light into that of blue light; more important, ultrasonic synthesis provides a specific environment as a chemical preparation method, the nanoparticle doping process generally requiring high temperature reaction is rapidly completed under the condition of lower temperature, therefore, the damage of high temperature environment on the ZnO luminescence performance can be avoided.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, in particular to a preparation method of highly efficient luminous zinc oxide nanoparticles. Background technique [0002] As a semiconductor, ZnO (zinc oxide) has many superior characteristics: the gap between the valence band and the conduction band is wide (3.37eV), the exciton binding energy is quite large (about 60meV at room temperature), non-toxic and harmless, and low cost, etc. Wait. These advantages make ZnO inherently a practical optoelectronic material. Compared with CdSe, CdTe and other luminescent nanocrystals, the outstanding advantages of ZnO are non-toxic and cheap. In fact, ZnO particles have been widely used in cosmetics, medicines, paints and other daily commodities, and the cost of laboratory synthesis of ZnO nanoparticles is only about one tenth of that of CdSe, CdTe and other nanomaterials. In recent years, the basic research on ZnO in academia has focused on...

AI Technical Summary

Problems solved by technology

In the previous research work of colleagues at home and abroad, Mg 2+ 、Cd 2+ , Mn 2+ , Fe 2+ etc. are doped into the lattice of ZnO nanomaterials, but the obtained products are alloy materials with only ultraviolet fluorescence. The reason is that the temperature required for the doping reaction is usually above 500°C. Alloys are formed, and their UV emission peaks are shifted to varying degrees

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