Redox-Improved Self-Assembled Monolayers for Inverted Perovskite Solar Cells.

ABSTRACT: Inverted perovskite solar cells (pero-SCs) utilizing nickel oxide (NiO_x)/self-assembled monolayer (SAM) as a hole transport layer (HTL) have demonstrated high power conversion efficiency (PCE). However, variations in the valence states of NiO_x on the surface create complexity in the growth of a high-quality SAM HTL. To address these challenges, a new SAM molecule MeOF-4SHCz is synthesized and utilized to target the Ni³⁺-rich regions on the NiO_x substrate. A redox reaction occurs at the interface and the oxidation product of MeOF-4SHCz forms a new S-O-Ni bonding at the Ni³⁺-rich regions. The application of the combined SAMs of MeOF-4SHCz and the regular SAM MeOF-4PACz can improve the overall coverage and uniformity of the SAM layer on N

SUBMITTER: Yuan M 

PROVIDER: S-EPMC12722204 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature