Design and elaboration of organic molecules for high field-effect-mobility semiconductors

Kazuo Takimiya, Masahiro Nakano, Hiroyoshi Sugino, Itaru Osaka

Research output: Contribution to journalReview articlepeer-review

41 Citations (Scopus)

Abstract

In this article, we focus on several high-mobility organic semiconductors so far reported, such as acenes, heteroacenes, and rylene diimides, in order to extract molecular and supramolecular factors, including molecular size, manner of π-extension, heteroatom, molecular shape, and substituent, which would enhance our understanding of the design strategy for the synthesis of molecules for high field-effect-mobility semiconductors. After performing a detailed inspection of these organic semiconductors, we arrive at the conclusion that the construction of a two-dimensional (2D) electronic structure with large orbital overlaps in the solid state is the key. This can be realized by tuning these molecular factors; for example, the use of linearly π-extended systems with fused aromatic ring structures, heteroatom incorporation, and the use of suitable substituents for 2D packing, such as herringbone or 2D bricklayer packing.

Original languageEnglish
Pages (from-to)68-78
Number of pages11
JournalSynthetic Metals
Volume217
DOIs
Publication statusPublished - 2016 Jul
Externally publishedYes

Keywords

  • Electronic structure
  • High mobility
  • Molecular design
  • Organic field-effect transistor
  • Organic semiconductor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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