High-efficiency formamidinium-cesium triiodide perovskites solar cells (IMAGE)

Science China Press

High-efficiency formamidinium-cesium triiodide perovskites solar cells

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(a) Schematic diagram of the SCI-FA1-xCsxPbI3 perovskite films fabricated by decoupling the crystallization process of formamidinium and cesium. (b) 3D distribution of Cs+ in the SCI-FA0.91Cs0.09PbI3 and 1S-FA0.91Cs0.09PbI3 film by ToF-SIMS analysis. (c) The J-V curves of the champion solar cell devices based on FAPbI3, SCI-FA0.91Cs0.09PbI3 and 1S-FA0.91Cs0.09PbI3 perovskites.

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