Understanding and controlling defect photophysics for stable and efficient lead-free perovskite solar cells
Joint bilateral project within agreement CNR / Royal Society
CNR PI - Daniele Meggiolaro | RS PI - Prof. H. Snaith (Oxford Univ., UK) | Only RS unit has been funded
Abstract: Among candidates possibly replacing lead in perovskites solar cells, only tin halide perovskites (THP) have shown significant device efficiencies. Enabling successful application of such materials still requires critical improvements of efficiencies and stability. Two of the main challenges to be overcome are the enhanced self-doping of the semiconductor and the oxidation of Sn(II) to Sn(IV). Both phenomena are strongly associated with the nature and activity of defects in the material. This project aims to investigate the defect activity in THPs through a combination of experimental and computational methods. The study focuses on two main aspects, i.e. the role of chemical composition and the role played by surfaces and interfaces in the defect activity of these materials. The outcome of this project will aid to develop optimized strategies for obtaining enhanced performance and stability of tin-based perovskite solar cells.
Activity: 01/12/2020 - 30/11/2022