Journal Article stability flexible perovskite solar cells perovskite solar cells Carrier transport Defect states Operational stability Perovskite/organic tandem solar cells Research Support, Non-U.S. Gov't Water Pollutants, Chemical blanket encapsulation (BE) built-in electric field charge carrier recombination charge-carrier transport cross-linkable organic elastomers cross‐linkable molecules degradation mechanisms dynamic self-healing electro-strictive strain excess charge carriers flexibility flexible organic solar cell flexible transparent electrode fullerene derivatives high‐boiling‐point nonhalogenated solvent hole density ion migration large area modules large‐area modules long-term operational stability