Regulated oxidation and moisture permeation via sulfinic acid based additive enables highly efficient and stable tin-based perovskite solar cells

PaperPaios
Written By Fluxim AG

Muhammad Abdel-Shakour, Kiyoto Matsuishi, Towhid H. Chowdhury, Ashraful Islam,

Solar Energy Materials and Solar Cells,

Volume 254, 2023, 112241, ISSN 0927-0248,

https://doi.org/10.1016/j.solmat.2023.112241.

Researchers are exploring Sn-based perovskite solar cells as a non-toxic alternative, but challenges remain due to oxidation and moisture permeation. A recent study used a Lewis base additive, formamidinesulfinic acid (FASO2H), to address these issues. Results showed a 32% reduction in Sn2+/Sn4+ oxidation, improved crystallinity, and a 66% decrease in lattice strain. The modified cells achieved a 7.44% power conversion efficiency and demonstrated superior moisture protection and light soaking stability, retaining 90% of initial efficiency after 450 hours.

Dark J-V and EIS for the fabricated PSCs were calculated using Paios.

Fluxim AG
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