Presentation 2012-04-18
Influence of insulator surface on hierarchial crystallographic and transport-band structures in pentacene polycrystalline films
Ryosuke MATSUBARA, Yuki Sakai, Toshio NOMURA, Yutaka MAJIMA, Masatoshi SAKAI, Kazuhiro KUDO, Masakazu Nakamura,
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Abstract(in English) We evaluate HOMO-band-edge fluctuation and in-plane crystallite size in pentacene thin-film transistors to clarify an origin of mobility increase by various substrate-surface treatment. By applying the substrate-surface treatments, crystalline domain size increases. However, the HOMO-band-edge fluctuation and the crystallite size do not change by the treatments. On the other hand, when we plot the mobilities against domain sizes, mobility is proportional to the domain size independent of treatments. This results indicate that enhancement of mobility by the treatments is only due to the increase of the size of crystalline domain.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Organic thin-film transistor / AFM potentiometry / Grazing incidence X-ray diffraction / Substrate-surface treatment
Paper # ED2012-5
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Committee ED
Conference Date 2012/4/11(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Influence of insulator surface on hierarchial crystallographic and transport-band structures in pentacene polycrystalline films
Sub Title (in English)
Keyword(1) Organic thin-film transistor
Keyword(2) AFM potentiometry
Keyword(3) Grazing incidence X-ray diffraction
Keyword(4) Substrate-surface treatment
1st Author's Name Ryosuke MATSUBARA
1st Author's Affiliation Graduate School of Materials Science, Nara Institute of Science and Technology()
2nd Author's Name Yuki Sakai
2nd Author's Affiliation Graduate School of Engineering, Chiba University
3rd Author's Name Toshio NOMURA
3rd Author's Affiliation Graduate School of Engineering, Chiba University
4th Author's Name Yutaka MAJIMA
4th Author's Affiliation Materials and Structures Laboratory, Tokyo Institute of Technology
5th Author's Name Masatoshi SAKAI
5th Author's Affiliation Graduate School of Engineering, Chiba University
6th Author's Name Kazuhiro KUDO
6th Author's Affiliation Graduate School of Engineering, Chiba University
7th Author's Name Masakazu Nakamura
7th Author's Affiliation Graduate School of Materials Science, Nara Institute of Science and Technology
Date 2012-04-18
Paper # ED2012-5
Volume (vol) vol.112
Number (no) 5
Page pp.pp.-
#Pages 5
Date of Issue