ESPCI web site
Jeudi (Thursday) 09/10/2025, 14h, Amphis Boreau (bâtiment C, 1er étage/1st floor, campus Vauquelin ESPCI)
Bismuth and Antimony-based nanocrystals for future photovoltaics
Abstract :
Solar cells based on nanocrystals have seen increasing interest in recent years due to the continuous rise in their power conversion efficiency. The most efficient cells are often based on nanocrystals that contain lead, such as lead sulfide (PbS) or metal halide perovskites (e.g., FAPbI3 or CsPbI3). While these nanocrystals lead to high efficiencies, they raise concerns regarding their large-scale applicability due to the environmental hazards they pose.
In my talk, I will discuss the synthesis of lead-free nanocrystals based on Sb and Bi compositions, their properties and application in solar cells. I will present a method to synthesize ternary nanocrystals by cation exchange, a simple, low-temperature process, and introduce a facile templated growth of small antimony sulfide nanorods that are of great interest for application in photovoltaics.
