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Highly Oriented Polymer Semiconductor Films Compressed at the Surface of Ionic Liquids for High‐Performance Polymeric Organic Field‐Effect Transistors
Author(s) -
Soeda Junshi,
Matsui Hiroyuki,
Okamoto Toshihiro,
Osaka Itaru,
Takimiya Kazuo,
Takeya Jun
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201401495
Subject(s) - materials science , polymer , semiconductor , organic semiconductor , spin coating , thin film transistor , ionic bonding , thin film , coating , nanotechnology , optoelectronics , composite material , layer (electronics) , organic chemistry , ion , chemistry
A novel and versatile method to align polymer semiconductors is demonstrated. Spreading and subsequent mechanical compression of a polymer thin film on an ionic liquid's surface yield a polymer thin film that has high uniaxial orientation of the polymer backbone, which is tested for typical polymer semiconductors of PB16TTT, PNDTBTC20, and P3HT. TFTs fabricated by the method exhibit significantly higher mobility compared to TFTs fabricated using a conventional spin‐coating process.