Ternary polymer solar cells with iridium-based polymer PM6Ir1 as a donor and N3:ITIC-Th as an acceptor exhibiting over 17.2% efficiency

Ternary PSCs were fabricated with PM6Ir1 as donor, ITIC-Th and N3 as acceptors. The incorporation of ITIC-Th can effectively optimize phase separation and molecular arrangement, leading to a PCE enhancement from 16.27% to 17.22%.