In recent years, perovskite solar cells appeared the most promising candidate for the 3rd generation photovoltaic device due to their favorable performance. However, beside the pure high performances of these devices, many bottlenecks remain, the main ones being their cost, their stability, the toxicity of lead halide perovskites and the understanding of their electrical response. During this seminar, we show the high possibilities, high control and versatility of the solution growth techniques for the preparation of materials with desired properties. And the great importance of the interfaces and selective contact properties for reaching high efficiencies perovskite solar cells will be illustrated. We also focus on the preparation of oxide structures, of highly efficient pure phase perovskites, on the effect of doping the hole transporting material (HTM) and on the development of new HTMs. In every case, Impedance spectroscopy studies will be discussed to expound and discriminate the bulk and interface effects. Finally, we will discuss the new lead-deficient perovskite family and lead-free perovskite.

报告人简介：Dr. Thierry Pauporté- is director of research at the Centre National de la Recherche Scientifique (CNRS) in France and he works at Chimie-Paristech (. He is graduated in Chemistry from the École Normale Supérieure de Lyon. He received his Ph.D. in physical chemistry from the Montpellier II University, France, in 1995. Dr. Th. Pauporté has made original and innovative contributions to the synthesis, characterization and understanding of fundamental chemical and physical properties of oxide films and nanostructures. He also works on hybrid perovskite semiconductors. His research interests include the functionalizing of the material surfaces and he works on the integration of films and structures in efficient devices. The related applications are the light emitting diodes, perovskite solar cells, dye-sensitized solar cells, nanosensors, photodetectors, photocatalysis, wettability, fouling…. He has published more than 175 papers in peer-reviewed journals, 5 book chapters and his WoS H-index is 50.