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Thiophene Polymer Semiconductors for Organic Thin‐Film Transistors
Author(s) -
Ong Beng S.,
Wu Yiliang,
Li Yuning,
Liu Ping,
Pan Hualong
Publication year - 2008
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200701717
Subject(s) - materials science , thin film transistor , transistor , semiconductor , organic semiconductor , stacking , optoelectronics , thiophene , electronics , field effect transistor , polymer , silicon , organic electronics , nanotechnology , flexible electronics , electrical engineering , organic chemistry , chemistry , composite material , layer (electronics) , engineering , voltage
Printed organic thin‐film transistors (OTFTs) have received great interests as potentially low‐cost alternative to silicon technology for application in large‐area, flexible, and ultra‐low‐cost electronics. One of the critical materials for TFTs is semiconductor, which has a dominant impact on the transistor properties. We review here the structural studies and design of thiophene‐based polymer semiconductors with respect to solution processability, ambient stability, molecular self‐organization, and field‐effect transistor properties for OTFT applications. We show that through judicial monomer design, delicately controlled π‐conjugation, and strategically positioned pendant side‐chain distribution, novel solution‐processable thiophene polymer semiconductors with excellent self‐organization ability to form extended lamellar π‐stacking orders can be developed. OTFTs using semiconductors of this nature processed in ambient conditions have provided excellent field‐effect transistor properties.