The end-capped group effect on dithienosilole trimer based small molecules for efficient organic photovoltaics

We designed and synthesized three new small molecules FBT–tDTS, DFBT–tDTS and RHO–tDTS based on the dithienosilole trimer as the core. The device based on RHO–tDTS achieved a power conversion efficiency (PCE) of 7.56%.