Small molecule donor third component incorporating thieno[3,2-b]thiophene unit enables 19.18% efficiency ternary organic solar cells with improved operational stability

Substituted quinoxaline based small-molecule donor guests enable 19% efficiency ternary organic solar cells

“…Wang et al introduced a thieno[3,2- b ]thiophene unit as a side-chain of BDT and synthesized SMD third component BTTC. 26 The incorporation into the PM6 : L8-BO system enhanced the crystallinity of the blend film and led to an improved PCE of 19.18%. Additionally, strategies involving end-group modifications have garnered considerable attention in enhancing performance.…”