[7a-A203-1~12] 12.4 Organic light-emitting devices and organic transistors

△ [7a-A203-7] Fabrication of Field Effect Transistors using Oriented Thin Films of Alkyl-substituted Phthalocyanine and Electrical Anisotropy based on Columnar Structure

〇Masashi Ohmori¹, Mitsuhiro Nakatani¹, Hirotake Kajii¹, Akihiko Fujii¹, Masanori Ozaki¹ (1.Osaka Univ.)

Keywords:Oriented thin film, Alkyl-substituted phthalocyanine, Field effect transistor

Field effect transistors using molecular oriented thin films of non-peripherally alkyl-substituted phthalocyanine (C6PcH₂) were fabricated by the bar-coating method. The thin films were confirmed to be uniformly oriented in a large area by the polarized optical microscopy and a low surface roughness at a molecular level by the atomic force microscopy. The field effect mobility parallel to the column axis was approximately 8 times higher than that perpendicular to the column axis. The experimental result was ascertained to be consistent with the simulated result by the density functional theory calculation.