The 70th JSAP Spring Meeting 2023

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12 Organic Molecules and Bioelectronics » 12.1 Fabrications and Structure Controls

[17p-B409-1~17] 12.1 Fabrications and Structure Controls

Fri. Mar 17, 2023 1:00 PM - 6:00 PM B409 (Building No. 2)

Yasuko Koshiba(Kobe Univ.), Kei Noda(Keio Univ.), Shunsuke Yamamoto(Tohoku Univ.), Seiya Yokokura(Hokkaido University)

2:00 PM - 2:15 PM

△ [17p-B409-5] Structural Rearrangement in Thin Films of Ph-BTBT-Cn

〇Takayuki Oka1, Nobutaka Shioya1, Takafumi Shimoaka1, Takeshi Hasegawa1 (1.ICR, Kyoto Univ.)

Keywords:IR spectroscopy, spin coating, organic semiconductor

Ph-BTBT-Cn exhibits excellent performances for organic thin-film transistors, and the performances are greatly influenced by the molecular packing in thin films. In this work, the effect of aging on the film structure of Ph-BTBT-Cn is investigated by a combination technique of X-ray diffraction and infrared spectroscopy. The results show that the film-specific structure (the thin-film phase) is converted to the single crystal structure by aging at room temperature. In addition, the conformational change of the alkyl chain during the structural conversion process is discussed.