[11p-Z13-1~18] 12.1 Fabrications and Structure Controls

△ [11p-Z13-3] Electrical Properties in tert-butyl Phthalocyanine Thin Film Fabricated by Bar-coating Method II

〇Genya Uzurano¹, Yuta Yabuuchi¹, Ryo Ishiura¹, Makoto Yoneya², Shusaku Nagano^3,4, Hirotake Kajii¹, Akihiko Fujii¹, Masanori Ozaki¹ (1.Osaka Univ., 2.AIST, 3.Rikkyo Univ., 4.Nagoya Univ.)

Keywords:Organic semiconductor, Solution process, Uniaxially oriented thin film

Uniaxially oriented thin films of tetra-tert-butylated phthalocyanine (t-BuPcH₂), a thermally stable phthalocyanine, were fabricated on Si substrate covered with polyimide layer by using 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 three times higher than that perpendicular to the bar-sweep direction. The electrical properties of t-BuPcH₂ were discussed by taking contact resistance between electrodes and t-BuPcH₂ into consideration.