Synergistic Tailoring Crystallization and Enhancing Stability by a Hydrophobic Polymer Enables High-Performance Perovskite Solar Cells

Perovskite solar cells have great potential for next-generation photovoltaic applications. Enormous efforts have been conducted to tailor the crystallization process and passivate defects for pursing the high-quality perovskite film. Herein, the hydrophobic polymer coenzyme Q10 (Co Q10) with a carbonyl functional group was introduced into the perovskite film. The strong interaction between the carbonyl group and undercoordinated Pb 2+ could trigger the highly oriented perovskite crystal structure with low defect concentrations. As a result, an efficiency of 22.73% was achieved and could maintain 91% of its initial value for 1000 h storage under an ambient environment without encapsulation.