Neglected acidity pitfall: boric acid-anchoring hole-selective contact for perovskite solar cells.

ABSTRACT: The spontaneous formation of self-assembly monolayer (SAM) on various substrates represents an effective strategy for interfacial engineering of optoelectronic devices. Hole-selective SAM is becoming popular among high-performance inverted perovskite solar cells (PSCs), but the presence of strong acidic anchors (such as -PO₃H₂) in state-of-the-art SAM is detrimental to device stability. Herein, we report for the first time that acidity-weakened boric acid can function as an alternative anchor to construct efficient SAM-based hole-selective contact (HSC) for PSCs. Theoretical calculations reveal that boric acid spontaneously chemisorbs onto indium tin oxide (ITO) surface with oxygen vacancies facilitating the adsorption progress. Spectroscopy and electrical measurement

SUBMITTER: Guo H 

PROVIDER: S-EPMC10237332 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature