Readily Processable Hole-Transporting Peropyrene Gels

Abstract

The development of organic electronics requires scalable solution-processing methods that enable the fabrication of electronic devices over large areas at low cost. The preparation of peropyrene gels constituted of 3D networks of entangled 1D ribbon-like fibrils that extend over the μm scale are now reported. OFETs were easily fabricated by depositing the gels in the sol state over bottom-gate bottom-contact transistors and by allowing its gelation thereafter. Electrical characterisation of such field-effect transistors shows a good balance between processability and performance with hole mobilities that are two orders of magnitude higher than those observed in thin films obtained from non-gelating solvents under the same conditions.

Keywords: field-effect transistors; peropyrene; polycyclic aromatic hydrocarbons; π-gels.