Real-time observation and control of pentacene film growth on an artificially structured substrate.
Suppression of nucleation around a gold electrode during pentacene growth on a SiO2 channel is found by photoemission electron microscopy. Mass flow is driven by the difference between the molecular orientations on SiO2 and gold. The poor connectivity at the channel/electrode boundary causes degradation in the performance of a field-effect transistor, which is found to be improved by self-assembled monolayer treatment on the electrode (see figure; thickness in monolayers (ML)).
Department of Complexity Science and Engineering The University of Tokyo 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 277-8561 (Japan).
Yuki
Y
Tsuruma
Institute for Materials Research Tohoku University 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 (Japan).
Abdullah
A
Al-Mahboob
Department of Complexity Science and Engineering The University of Tokyo 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 277-8561 (Japan).
Susumu
S
Ikeda
Institute for Materials Research Tohoku University 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 (Japan).|Center for Functional Nanomaterials Brookhaven National Laboratory Upton, NY 11973 (USA).
Jerzy T
JT
Sadowski
Institute for Materials Research Tohoku University 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 (Japan).|World Premier International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) 1-1 Namiki, Tsukuba-shi, Ibaraki 305-0044 (Japan).
Genki
G
Yoshikawa
Institute for Materials Research Tohoku University 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 (Japan).
Yasunori
Y
Fujikawa
Institute for Materials Research Tohoku University 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 (Japan).
Toshio
T
Sakurai
Department of Complexity Science and Engineering The University of Tokyo 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 277-8561 (Japan).
Koichiro
K
Saiki
organic field-effect transistors; pentacene; self-assembled monolayers; thin films