Supramolecular order of solution-processed perylenediimide thin films: High-performance small-channel n-type organic transistors

Simone Fabiano, He Wang, Claudia Piliego, Cherno Jaye, Daniel A. Fischer, Zhihua Chen, Bruno Pignataro, Antonio Facchetti, Yueh Lin Loo, Maria Antonietta Loi

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

N,N′-1H,1H-perfluorobutyl dicyanoperylenecarboxydiimide (PDIF-CN 2), a soluble and air stable n-type molecule, undergoes significant reorganization upon thermal annealing after solution deposition on several substrates with different surface energies. Interestingly, this system exhibits an exceptional edge-on orientation regardless of the substrate chemistry. This preferential orientation is rationalized in terms of strong intermolecular interactions between the PDIF-CN2 molecules. The presence of a pronounced π-π stacking is confirmed by combining near-edge X-ray absorption fine structure spectroscopy (NEXAFS), dynamic scanning force microscopy (SFM) and surface energy measurements. The remarkable charge carrier mobility measured in field-effect transistors, using both bottom- and top-contact (bottom-gate) configurations, underlines the importance of strong intermolecular interactions for the realization of high performing devices.

Original languageEnglish (US)
Pages (from-to)4479-4486
Number of pages8
JournalAdvanced Functional Materials
Volume21
Issue number23
DOIs
StatePublished - Dec 6 2011

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Electrochemistry

Fingerprint Dive into the research topics of 'Supramolecular order of solution-processed perylenediimide thin films: High-performance small-channel n-type organic transistors'. Together they form a unique fingerprint.

Cite this