Solution-processed bulk heterojunction solar cells based on BF2–hydroxychalcone complexes

Abstract

2′-Hydroxychalcone derivatives featuring a triphenylamine terminal unit were synthesized in one step and behaved as effective ligands for borondifluoride coordination, enabling the straightforward generation of D–A molecules with strong absorption. Solution-processed solar cells based on these complexes and PC₆₁BM showed a PCE of 1.13%.