Recent Advances in the Development of Semiconducting DPP-Containing Polymers for Transistor Applications

• Published in: Advanced materials (Weinheim) Vol. 25; no. 13; pp. 1859 - 1880
• Main Authors: Nielsen, Christian B., Turbiez, Mathieu, McCulloch, Iain
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 04.04.2013; WILEY‐VCH Verlag
• Subjects: Charge transport; conjugated polymers; donor-acceptor copolymers; Electron mobility; Energy levels; field-effect transistors; Molecular Structure; Molecular weight; organic electronics; Polymers; Polymers - chemical synthesis; Polymers - chemistry; Pyrroles - chemistry; Quantum Theory; semiconducting polymers; Semiconductor devices; Semiconductors; Thin films; Transistors; Transistors, Electronic
• ISSN: 0935-9648; 1521-4095; 1521-4095
• DOI: 10.1002/adma.201201795

This progress report summarizes the numerous DPP‐containing polymers recently developed for field‐effect transistor applications including diphenyl‐DPP and dithienyl‐DPP‐based polymers as the most commonly reported materials, but also difuranyl‐DPP, diselenophenyl‐DPP and dithienothienyl‐DPP‐containing polymers. We discuss the hole and electron mobilities that were reported in relation to structural properties such as alkyl substitution patterns, polymer molecular weights and solid state packing, as well as electronic properties including HOMO and LUMO energy levels. We moreover consider important aspects of ambipolar charge transport and highlight fundamental structure‐property relations such as the relationships between the thin film morphologies and the charge carrier mobilities observed for DPP‐containing polymers. In this Progress Report, the most recent literature on diketopyrrolopyrrole‐containing polymers developed for field‐effect transistor applications is reviewed and the structure–property relations of importance for achieving high performance n‐ and p‐type transistor materials are discussed in detail.