Dual-layered percolative systems with (1) polymer donor (PD):elastomer and (2) PD:small-molecule acceptor networks in bottom and top layers, respectively, enable intrinsically stretchable organic photovoltaics with excellent mechanical robustness.
A novel wide bandgap polymer donor, P(BTzE-BDT), was synthesized and incorporated into the PM6:BTP-eC9 system to fabricate ternary OSCs, achieving a higher power conversion efficiency (PCE) of 20.0%.
The photovoltaic properties and energy loss of organic solar cells (OSCs) based on non-fullerene acceptors (NFAs) are highly dependent on their molecular structures and morphologies.
Two novel unfused acceptors, ABBT-BO(DT), featuring 1,4-azaborine have been synthesized. ABBT-BO based OSCs achieved an optimal PCE of over 10% for higher exciton dissociation, improved carrier transport and suppressed charge recombination.
Two novel oligomers boost the 1 cm2 device to achieve a remarkable PCE exceeding 17% using a green solvent in open-air without post-treatment. In-depth in situ & ex situ studies elucidate the mechanisms of action of the oligomers. This work demonstrates effective guidelines for future manufacturing.