Molecular Cooperation of Ion-Free Ternary Complexes Enhances Efficiency and Stability of Perovskite Solar Cells.

ABSTRACT: Chemical dopants such as ionic additives are essential in hole-transport layers (HTLs) to enhance their charge-transport abilities in perovskite solar cells (PSCs). However, these ionic components often cause issues of ion migration and phase segregation, which limit the reliability and stability of PSCs. Herein, an effective strategy of cooperative ternary components (CTC) is developed to enhance device efficiency and stability by combining molecular additives and conjugated polymers into the conventional 2,2',7,7'-tetrakis (N,N-di-p-methoxyphenyl-amine) 9,9'-spirobifluorene (Spiro)-based HTLs. All-molecule-based CTC enables negligible phase segregation in the HTL compared to ionic doping. The collaborative roles of small molecules and conducting polymer in the CTC blend facilitate to enh

SUBMITTER: Dong P 

PROVIDER: S-EPMC11935208 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature