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Molecular Ordering of High‐Performance Soluble Molecular Semiconductors and Re‐evaluation of Their Field‐Effect Transistor Characteristics
Author(s) -
Izawa Takafumi,
Miyazaki Eigo,
Takimiya Kazuo
Publication year - 2008
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.200800799
Subject(s) - materials science , intermolecular force , organic semiconductor , alkyl , transistor , diffraction , field effect transistor , semiconductor , thin film transistor , thin film , electric field , layer (electronics) , optoelectronics , crystallography , nanotechnology , molecule , optics , organic chemistry , chemistry , physics , quantum mechanics , voltage
Intermolecular hydrophobic interactions between long alkyl chains (fastener effect) can enhance the intermolecular overlap of the semiconducting layer of 2,7‐dialkyl[1]benzothieno[3,2‐ b ][1]benzothiophenes (C n ‐BTBTs; n = 8, 10, 12), which contributes to improvements of the electric characteristics of their organic field‐effect transistors. The molecular ordering of C n ‐BTBTs in the thin‐film state is elucidated by means of in‐plane and out‐of‐plane X‐ray diffraction of spin‐coated thin films, and single crystal X‐ray analysis.