17.25% high efficiency ternary solar cells with increased open-circuit voltage using a high HOMO level small molecule guest donor in a PM6:Y6 blend

A small-molecule TiC12 was primarily incorporated into the PM6:Y6 system as the third component to construct ternary OSCs. As a result, a record PCE of 17.25% with an advanced V oc of 0.853 V was obtained in the OSCs.