[18p-G205-1~18] 12.1 Fabrications and Structure Controls

△ [18p-G205-6] Evaluation of Homeotropic Alignment of Columnar Liquid-crystalline Semiconductor in Thin Films and Its Photovoltaic Properties

〇Masashi Ohmori¹, Masaya Kurokawa¹, Yuki Nishikawa¹, Akihiko Fujii¹, Masanori Ozaki¹ (1.Osaka Univ.)

Keywords:columnar liquid crystal, molecular orientation control, solar cell

Using unique properties of the discotic liquid crystals, homeotropically oriented thin films of liquid-crystalline phthalocyanine (C6PcH₂) were fabricated by spin-coating. Molecular orientation in the thin film was clarified by the grazing wide angle X-ray scattering technique. Moreover, solar cells utilizing molecular oriented thin films were fabricated, and the carrier transport and photovoltaic properties were measured. The homeotropic alignment process was indicated to be effective for the solar cell applications.