Dual-Acceptor-Clamped Diketopyrrolopyrrole for High Performance monopolar n-Type Transistors

Abstract

A diketopyrrolopyrrole (DPP) semiconductor incorporating fluorinated naphthobisthiadiazole (FNTz) end units in an A2–A1–A2 architecture, DNTDPP, is synthesized to stabilize electron transport. The molecule exhibits a low LUMO level (−3.89 eV), strong solid state aggregation, and excellent thermal stability. Top gate bottom contact OTFTs deliver monopolar n type behavior with electron mobility up to 1.18 cm² V⁻¹ s⁻¹.