Rational design of two-dimensional PDI-based small molecular acceptor from extended indacenodithiazole core for organic solar cells

A pair of linear two-dimensional conjugated non-fullerene acceptors, named as TVIDTPDI and TVIDTzPDI were successfully synthesized and evaluated as acceptor materials in organic solar cells (OSCs). By blending with PTB7-Th, the TVIDTzPDI-based OSCs showed a higher PCE of 2.09% than that (1.50%) of TVIDTPDI-based devices.142