Inhibition of Sn2+ Oxidation in FASnI3 Perovskite Precursor Solution and Enhanced Stability of Perovskite Solar Cells by Reductive Additive
Md. Abdul Karim, Kiyoto Matsuishi, Md. Emrul Kayesh, Yulu He, and Ashraful Islam
ACS Applied Materials & Interfaces 2023 15 (39), 45823-45833
This paper discusses the improvement of FASnI3 perovskite solar cells' reproducibility and stability by incorporating 4F-PHCl, a reductive molecule, in the perovskite precursor solution. 4F-PHCl enhances the solution's stability, prevents Sn2+ oxidation, and improves the films' crystallinity and stoichiometry, resulting in a power conversion efficiency of 10.86%.
How Paios was used
PAIOS was used to measure transient photovoltage and photocurrent decays, shedding light on charge carrier dynamics and demonstrating improved charge transport and reduced recombination in 4F-PHCl-treated devices.