[12a-PB3-1~19] 12.1 Fabrications and Structure Controls

△ [12a-PB3-7] Electrical Properties in tert-butyl Phthalocyanine Thin Film Fabricated by Bar-coating Method

〇Genya Uzurano¹, Yuta Yabuuchi¹, Ryo Ishiura¹, Makoto Yoneya², Shusaku Nagano³, Akihiko Fujii¹, Masanori Ozaki¹ (1.Osaka Univ., 2.AIST, 3.Nagoya Univ.)

Keywords:Phthalocyanine, Bar-coating method, Organic thin film transistor

Uniaxially oriented thin films of a thermally stable phthalocyanine, tetra-tert-butyl phthalocyanine (t-BuPcH₂), were fabricated on Si substrate covered with polyimide by bar-coating method. The molecular orientation and electrical properties of t-BuPcH₂ in the thin film were investigated. The field effect mobility of t-BuPcH₂ was estimated to be 1.32×10^-4 cm² V^-1 s^-1 at maximum. The field effect mobility parallel to the bar-sweep direction was approximately four times higher than that perpendicular to the bar-sweep direction.