Effective Encapsulation and Surface Treatment for Damp‐Heat Stable Triple Cation Perovskite Solar Cells

Perovskite Solar Cells In article number 2300825, Jeong, Yang, and co-workers show preparation of damp-heat-resistance CFM-based perovskite solar cells through the implementation of various surface treatment strategies, including antisolvent treatment control and alkyl-type interfacial passivation, and the construction of an effective encapsulation structure with a twisted conductive tape, processed via low-temperature lamination at 115 °C. The encapsulated device demonstrated superior stability, maintaining functionality for 500 h under 85 °C and 85% relative humidity.