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Inducement of Azimuthal Molecular Orientation of Pentacene by Imprinted Periodic Groove Patterns for Organic Thin‐Film Transistors
Author(s) -
Jo Sung Jin,
Kim Chang Su,
Lee Min Jung,
Kim Jong Bok,
Ryu Seung Yoon,
Noh Joo Hyon,
Ihm Kyuwook,
Baik Hong Koo,
Kim Youn Sang
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.200701076
Subject(s) - pentacene , materials science , groove (engineering) , thin film transistor , transistor , orientation (vector space) , nanometre , optoelectronics , field (mathematics) , azimuth , nanotechnology , layer (electronics) , electrical engineering , optics , physics , voltage , composite material , geometry , mathematics , metallurgy , engineering , pure mathematics
A new strategy for control of the in‐plane orientation of pentacene is introduced using nanometer‐scale periodic groove patterns as an alignment layer. Compared to pentacene films that are not aligned, an enhanced field effect mobility of 1.67 cm 2 V −1 s −1 has been achieved when the optimal π‐orbital overlap direction is parallel to the direction of the current flow.