[13p-N302-1~12] 12.1 Fabrications and Structure Controls

△ [13p-N302-1] Template-Free Control of Molecular Orientation in Ph-BTBT-C₁₀ Thin Films

〇Mariko Yoshida¹, Nobutaka Shioya¹, Kazutaka Tomita¹, Takafumi Shimoaka¹, Takeshi Hasegawa¹ (1.ICR, Kyoto Univ.)

Keywords:pMAIRS, vapor deposition, liquid crystal

The performance of organic semiconductors depends on the molecular aggregation in a thin film. In particular, the molecular orientation determines the direction of the charge transport in the film. In the present study, films of Ph-BTBT-C₁₀ were prepared by the vapor deposition technique at several substrate temperatures. The pMAIRS measurements reveal that the face-on oriented film is obtained on a cooled substrate at ~173 K.