报告时间：2021年11月18日15:00-17:00 

报告地点：腾讯会议（Tencent Meeting）

          会议ID:929 364 309

报告人： Gilbert Teyssèdre

工作单位：法国国家科学研究中心（CNRS）

举办单位：威廉希尔

报告人简介：

Gilbert Teyssèdre, born in 1966, received his Engineer degree in materials physics and graduated in solid state physics in 1989 at the INSA, Toulouse, France. Then he joined the Solid State Physics Lab in Toulouse and obtained the Ph.D. degree from Paul Sabatier University in 1993 for work on ferroelectric polymers. His research activities concern the development of luminescence techniques in insulating polymers with focus on chemical and physical structure, degradation phenomena, space charge and transport properties. He is currently Senior Researcher at CNRS. He has been head of the Solid Dielectrics and Reliability group at Laplace from 2004 to 2015. He has held numerous governmental and industrial research grants in the field of electrical insulation and has co-authored over 160 contributions to scientific journals and book chapters and 230 conference proceedings. He is member of the scientific committee of several conference series as CEIDP since 2016, ICD, ICEMPE, and JiCable. He is Associate Editor of IEEE Trans. Dielectr. Electr. Insul (2021-).

报告简介：

Luminescence constitutes a unique way to probe the interaction of electrical charges with chemical groups constituting insulations. The kinetic or potential energy released by charges produce excited states that can relax through a physical pathway, producing light, or lead to chemical reactions. All these feature may help understanding electrical ageing processes. Beyond that, luminescence can be exploited to probe changes in the chemistry of materials. Theoretical aspects on excited states creation and relaxation will be described. Various methods, ranging from photo-luminescence, to electro-luminescence, plasma-luminescence, cathodo-luminescence will be described with illustration obtained on unsaturated polyesters and polyolefins (polyethylene, polypropylene)