报告题目：Design ofperovskites and selective contacts for Solar Cells
时间：2018年11月9日星期五上午10:00
地点：武汉光电研究中心A301
报告人：Pr. ThierryPauporté
Biography：
Pr.Thierry Pauporté- is director of research at the Centre National de laRecherche Scientifique (CNRS) in France and he works at Chimie-Paristech (. Heis graduated in Chemistry from the École Normale Supérieure de Lyon. Hereceived his Ph.D. in physical chemistry from the Montpellier II University,France, in 1995. Dr. Th. Pauporté has made original and innovativecontributions to the synthesis, characterization and understanding offundamental chemical and physical properties of oxide films and nanostructures.He also works on hybrid perovskite semiconductors. His research interests includethe functionalizing of the material surfaces and he works on the integration offilms and structures in efficient devices. The related applications are thelight emitting diodes, perovskite solar cells, dye-sensitized solar cells,nanosensors, photodetectors, photocatalysis, wettability, fouling…. He haspublished more than 175 papers in peer-reviewed journals, 5 book
Abstract:
Inrecent years, new concepts, materials and technologies have dramaticallyboosted the efficiency of solar cells prepared from solutions. Among them,perovskite solar cells appeared the most recently and are the most promising.However, beside the pure high performances of these devices, many bottlenecksremain, the main ones being their cost, their stability, the toxicity of leadhalide perovskites and the understanding of their electrical response.
Duringthis seminar, a panorama of the recent research carried out at Chimie-Paristechon these various aspects will be presented. Our researches show the highpossibilities, high control and versatility of the solution growth techniquesfor the preparation of materials with desired properties. We will illustratethe great importance of the interfaces and selective contact properties forreaching high efficiencies perovskite solar cells. We will develop our recentresults and achievement on the preparation of oxide structures, of highlyefficient pure phase perovskites, on the effect of doping the hole transportingmaterial (HTM) and on the development of new HTMs. In every case, impedance spectroscopy studieshave provided us important inputs for understanding the device performances andtheir variations. Impedance spectroscopy is also a powerful tool todiscriminate the bulk and interface effects. Finally, we will discuss the newlead-deficient perovskite family and lead-free perovskite.
