Triplet Acceptors with a D‐A Structure and Twisted Conformation for Efficient Organic Solar Cells

Triplet acceptors have been developed to construct high‐performance organic solar cells (OSCs) as the long lifetime and diffusion range of triplet excitons may dissociate into free charges instead of net recombination when the energy levels of the lowest triplet state (T 1 ) are close to those of charge‐transfer states ( 3 CT). The current triplet acceptors were designed by introducing heavy atoms to enhance the intersystem crossing, limiting...