Benzodithiophene-Based Spacers for Layered and Quasi-Layered Lead Halide Perovskite Solar Cells.

ABSTRACT: Incorporating extended pi-conjugated organic cations in layered lead halide perovskites is a recent trend promising to merge the fields of organic semiconductors and lead halide perovskites. Herein, we integrate benzodithiophene (BDT) into Ruddlesden-Popper (RP) layered and quasi-layered lead iodide thin films (with methylammonium, MA) of the form (BDT)₂ MA_n-1 Pb_n I_3n+1 . The importance of tuning the ligand chemical structure is shown as an alkyl chain length of at least six carbon atoms is required to form a photoactive RP (n=1) phase. With N=20 or 100, as prepared in the precursor solution following the formula (BDT)₂ MA_N-1 Pb_N I_3N+1 , the performance and stability of devices surpassed those with phen

SUBMITTER: Primera Darwich B 

PROVIDER: S-EPMC8361775 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature