Structural Order and Carrier Transport in Thin Films of Poly(3-hexylthiophene) and Pentacene for OFETs

カテゴリ: 全国大会

論文No: 2-112

グループ名: 【全国大会】平成19年電気学会全国大会論文集

発行日: 2007/03/15

タイトル(英語): Structural Order and Carrier Transport in Thin Films of Poly(3-hexylthiophene) and Pentacene for OFETs

著者名: Xin Wang(愛知工業大学),Qiang Zhang(愛知工業大学),落合 鎮康(愛知工業大学),澤 五郎(愛知工業大学),内田 悦行(愛知工業大学),小嶋 憲三(愛知工業大学),大橋 朝夫(愛知工業大学),水谷 照吉(愛知工業大学)

著者名(英語): Xin Wang(Aichi Institute of Technology),Qiang Zhang(Aichi Institute of Technology),Shizuyasu Ochiai(Aichi Institute of Technology),Goro Sawa(Aichi Institute of Technology),Yoshiyuki Uchida(Aichi Institute of Technology),Kenzo Kojima(Aichi Institute of Technology),Asao Ohashi(Aichi Institute of Technology),Teruyoshi Mizutani(Aichi Institute of Technology)

要約(日本語): Organic field-effect transistors (OFETs) based on polymer of regioregular poly(3-hexylthiophene) (P3HT) and oligomer of pentacene (PEN) were fabricated under different experimental conditions. Film morphologies and aggregation states were characterized by UV-visible absorption spectra, AFM and out-of-plane XRD. For polythiophenes, self-assembled PI-PI stacking leads to H-aggregation. For PEN, it forms “herringbone” structure and the large tilting angle leads to J-aggregation. Multiple PI-PI* absorption peaks for P3HT films are ascribed to the vibronic progression with the ring breathing mode but not to the Davydov splitting due to aggregation, which might result from the folding of the long chain in polymers. This explanation coincides well with the relatively poor crystallinities and low mobilities in semicrystalline P3HT films.

原稿種別: 日本語

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