Karthick SEKAR is a postdoctoral researcher at Institut Matériaux Microélectronique Nanosciences de Provence (IM2NP), Aix-Marseille Université, France. He received his double doctoral degree from the Center for Research and Advanced Studies (CINVESTAV-IPN), Mexico (PhD in sciences in Nanoscience and Nanotechnology) and the XLIM-Research Institute, University of Limoges, France (PhD in Engineering and information sciences) in 2021. Later, he completed his first postdoctoral research work on ZnO nanowires for flexible perovskite solar cells at the GREMAN laboratory, University of Tours, France. His research mostly focused on perovskite materials, thin films, nanowires and solar cells, including theoretical simulations using DFT and SCAPS-1D.