Scalable Fabrication of Methylammonium-Free Wide-Bandgap Perovskite Solar Cells by Blade Coating in Ambient Air.

ABSTRACT: Scalable fabrication of efficient wide-bandgap (WBG) perovskite solar cells (PSCs) is crucial to realize the full commercial potential of tandem solar cells. However, there are challenges in fabricating efficient methylammonium-free (MA-free) WBG PSCs by blade coating, especially its phase separation and films stability. In this work, an MA-free WBG perovskite ink is developed for preparing FA_0.8Cs_0.2Pb(I_0.75Br_0.25)₃ films by blade coating in ambient air. Among various A-site iodides, RbI is found to be the most effective in suppressing the precipitation of PbI₂ induced by Pb(SCN)₂ while keeping the enlarged grains. The distribution of Rb suggested that the Rb ions are kept isolated with the perovskite grains duri

SUBMITTER: Liu J 

PROVIDER: S-EPMC12214146 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature