Planar star-shaped organic semiconductor with fused triphenylamine core for solution-processed small-molecule organic solar cells and field-effect transistors

摘要

The symmetrical planar star-shaped organic semiconductor DMM-TPA-[DTS(BTTh3)]3 with fused TPA core donor and three branch motifs, DTS(BTTh3), exhibited efficient p-type semiconducting performance in solution-processed SMOSCs and OFETs compared to the tilted star-shaped TPA-[DTS(BTTh_3)]_3; a noteworthy PCE value of 4.16% was observed, with a hole mobility and on/off ratio of 7.6 × 10 ~(-3) cm~2 V~(-1) s~(-1) and 5 × 10 ~6, respectively.