 The proposed strategy involves incorporating an inorganic 2D-CL terminated T3-C2, T3-C2-CLX, emzine into the bulk and surface of a CSPBBR3 film. This results in a compressed and confined parafskite lattice, which is stabilized by the PB-Backslash-UF8-FFCL bond and the 2D-T3-C2 immobilizing the lattice. Additionally, the defective surface is healed, resulting in a champion efficiency of 11.08%, which is the highest efficiency record for this type of parafskite solar cell. Furthermore, the unencapsulated device demonstrated nearly unchanged performance under 80% relative humidity over 100 days and 85 degrees Celsius over 30 days. This article was authored by Ching Weizhou, Jialong Duan, Jian Du, and others.