More wonderful videos on the website
www.koushare.com
Figure Tang Guodong
Title: nanostructured snse integrated with Se quantum dots with ultra power factor and thermal performance from high magnetic field assisted hydraulic synthesis reporter: Tang Guodong unit: Nanjing University of technology time: October 13, 2019 location: strong magnetic field science center, Chinese Academy of Sciences
Scan code to watch wonderful report video
Report summary
Thermoelectric materials that can directly convert thermal energy into electrical energy have great potential in solving the present energy crisis. SnSe has emerged as one of the most intriguing new thermoelectric materials since the discovery of the excellent thermoelectric properties of its single crystals. Here, we develop a new solution synthesized method (in situ magnetic field-assisted hydrothermal synthesis) for achieving new nanostructured SnSe integrated with Se quantum dots. The critical nucleation energy reduces and the nucleation rate increases during the hydrothermal synthesis process as a high magnetic field is applied, which leads to the presence of the homogeneous distribution of Se quantum dots and smaller nano grains. Enhanced density of states and the energy filtering effect contribute towards a significant enhancement in the Seebeck coefficient and power factor (PF) due to the Se quantum dots and smaller nano grains. The enhanced density of states was directly identified by ultraviolet photoelectron spectroscopic measurements. With the aid of a high magnetic field in solution chemistry, these materials maintain low thermal conductivity due to the Se quantum dots, smaller nano grains and nanoprecipitates. Benefiting from the enhanced power factor and reduced thermal conductivity, a high figure of merit (ZT) of ～2.0 at 873 K was achieved in a Se quantum dot/Sn0.99Pb0.01Se nanocomposite. This work paves the way for the design of prospective thermoelectric materials by applying an external high magnetic field.
Personal profile
Tang Guodong, Ph.D., associate professor, School of materials science and engineering, Nanjing University of technology. In 2011, he received a Ph.D. degree in condensed matter physics from Nanjing University, from academicians, and visited the University of Missouri Kansas City. It was selected as the training object of "excellence program and Zijin star" of Nanjing University of technology. Mainly engaged in semiconductor thermoelectric materials and their applications, magnetic materials and other aspects of research. He has successively presided over one National Natural Science Fund and two natural science funds of Jiangsu Province. He has published several SCI papers in j.am.chem.soc. And other international famous journals.
Meeting introduction
The Eighth International Conference on magnetic Science
From October 11 to 14, 2019, the Eighth International Magnetic science conference was successfully held in Hefei. The conference was sponsored by the strong magnetic field science center of the Chinese Academy of Sciences, the Key Laboratory of strong magnetic field and ion beam physics and biology of the Chinese Academy of Sciences, the Key Laboratory of space biology experiment simulation technology national defense, School of life, northwest Polytechnic University, and co organized by the school of physics and materials science of Anhui University, with the support of the International Cooperation Bureau of the Chinese Academy of Sciences. The scientific research under the condition of strong magnetic field involves many subjects such as physics, chemistry, material science, earth science, life science and medicine. The International Conference on magnetic science is one of the most influential international conferences on the research of materials and life sciences under magnetic field, attracting many experts and scholars from all over the world.
————Previous excellent review -- ● [academic Video] the 8th International Conference on magnetic science | Yukako fujishiro of University of Tokyo: emergent transport phenomena in topological spin texts reviewed by high-magnetic-field measurements ● [academic Video] the 8th International Conference on magnetic Science| Zhu Xuebin, researcher, Institute of solid state, Chinese Academy of Sciences: magneto hydraulic synthesis of MX? Nanosheets as electrons for supercaptors ● [academic Video] 8th International Conference on magnetic science | Xu Chunxiao, researcher, Institute of electrical engineering, Chinese Academy of Sciences: Arabidopsis flowing is affected by near null magnetic field ● [academic Video] 8th International Conference on magnetic Science| Han Jinlin, researcher of National Astronomical Observatory of Chinese Academy of Sciences: scientific magnetic fields ● [academic Video] the 8th International Conference on magnetic science; strong magnetic field science center of Chinese Academy of Sciences; light uranium professor of Chinese mainland of science and technology; direct observation of topological magnetic structures ● [academic Video] the 8th International Conference on magnetic science; Jim values of Brown University: learning about life with Magnetic fields ● [academic Video] 8th International Conference on magnetic science | vitalii zablotskii Professor, Institute of physics, Czech Academy of Sciences: biological effects of high-grade magnetic fields ● [academic Video] 8th International Conference on magnetic science | tsunehisa Kimura Professor, Kyoto University, Japan: magnetism induced by atomic level eddy Current ● [academic Video] the 8th International Conference on magnetic science | Professor Alois loidl of University of odesberg, Germany: exceptions in quantum magnets ● [academic Video] the 8th International Conference on magnetic science | academician Theo racing of University of ladderburg, Netherlands: all optical control of magnetism
In order to meet the needs of more researchers, the sharing platform has opened wechat communication groups in various research fields. Please add wechat 18256943123 (note your research direction) to join the group! Koushare website www.koushare.com has opened its own upload function, and we look forward to your sharing! Welcome to provide all kinds of academic conference or report information, so that the majority of researchers can participate in exchange and study.
Contact person: Li pan 18005575053 (wechat same number) pokes here to watch the wonderful video!