Date: December 26, 2019
Location: A311 SPE, Henan University
Professor Zhou Yu from the school of physics and electronics of Central South University gave an academic talk entitled "Controllable preparation of new two-dimensional materials and device foundation" in the school of physics and electronics. The academic lecture was presided over by Dean Deng Hao, and students and teachers from the School of Physics and Electronics participated.
Professor Zhou introduced his work from four aspects:
1. The double-layer graphene p-n junction was synthesized by modulation doping chemical vapor deposition, and the photocurrent generation mechanism was attributed to the photoelectric thermoelectric conversion. The origin and strain energy band regulation of ultra-long graphene manifolds were found.
2. The ferroelectricity and piezoelectricity of two-dimensional In2Se3 nanosheets are experimentally investigated for the first time and applied in efficient photocurrent generation with a photoelectric effect. The magnetoresistance and thermal conductivity of synthesized wte2 films were studied
3. Using the synthesized WTe2 film, its magnetoresistance and thermal conductivity were investigated.
4. By using single-crystal MoS2 and WTe2 nanosheets as model catalysts, using a chip electrochemical reaction platform, we systematically discuss how various factors affect the overall performance of the hydrogen evolution reaction: including the Schottky barrier at the interface, thermodynamic Gibbs free energy, the effect of catalytic conductivity and dielectric constant.
Finally, Professor Zhou and the teachers and students had lively discussion.
About the reporter:
Zhou Yu, Professor of School of physics and electronics, Central South University, and experimental director of Nanophysics and 2D materials team. He graduated from the Department of materials science of Sichuan University in 2010 and received a doctor of Science degree from Peking University in 2015. From 2015 to 2019, he successively carried out post-doctoral research at Yale University and UNC-Chapel Hill. In June 2019, he joined the school of physics and electronics of Central South University and became a permanent member of the State Key Laboratory of powder metallurgy. The research group is committed to developing micro/nanostructure and phase-controlled synthesis methods for new condensed systems, establishing micro/nanoscale fine structure characterization methods and advanced physical property research methods, aiming to achieve physical property regulation, develop high-performance functional devices, and strengthen the optimization design of the condensed system. He has published more than 40 academic papers in international well-known journals such as Science, Physical Review Letters, Nature Communications, Nano Letters, Advanced Materials, the Journal of the American Chemical Society, etc. which are cited more than 2000 times. and the H-factor is 25. He has won one Chinese invention patent and presided over the National Natural Science Youth Fund and the startup fund of distinguished professors.
