The method of preparing p-ZnO by thermal oxidation of Zn3N2 single crystal film was invented, and the P-ZnO film was successfully prepared, which is internationally recognized as one of the methods for preparing P-ZnO. Using the optical gain effect of microcavity and the quantum confinement effect of nanostructure, nano-sheet materials with high ultraviolet emission at high temperature (560 oC) were obtained, and the structure and high-pressure phase transition behavior of the materials were deeply studied, which laid the foundation for further development of high-temperature optoelectronic devices. By introducing i-ZnO layer into p-GaN/n-ZnO heterojunction, a new structure of p-GaN/i-ZnO/n-ZnO was constructed, and a ZnO heterojunction ultraviolet light emitting diode with near ultraviolet emission at room temperature was successfully developed.
The electron cyclotron resonance (ECR) microwave plasma nitridation method was invented to prepare high quality SiN thin films. According to the principle that longitudinal optical phonons strongly absorb P-polarized infrared, a method to characterize ultra-thin silica by P-polarized infrared reflection absorption spectrum is established and developed.
Internationally, it is proposed that the invisible SP2π- cluster is the luminous center. It is pointed out that N entering sp3 network leads to coordination number reduction and stress release. It is pointed out that the bridging effect of N, sp2π clusters and other deformations determine the size of the energy gap. Internationally, it is proposed and proved that N entering a-C:H network causes the weakening of C-H bond and the instability of the network.
In recent years, more than 150 SCI papers have been published in adv.mater. Physical Review B, Journal of Physical Chemistry. Bachelor of chemistry. Physical column, optical column, etc. The published papers have been cited by SCI for more than 800 times and won 8 national invention patents. He was invited to write the theme of "Low-dimensional ZnO nanostructures and nano-heterojunction growth" for the American encyclopedia of nanotechnology. Domestic academic conferences invited 9 reports and international academic conferences invited 8 reports.
Responsible for the National Natural Science Foundation, the "Hundred Talents Program" of Chinese Academy of Sciences, the National Science Fund for Distinguished Young Scholars, the national "Eleventh Five-Year Plan" and "863" projects, the national "Tenth Five-Year Plan" and "863" sub-projects and major innovation cultivation projects of the Ministry of Education.