Ambipolar carrier transport properties and molecular packing structure of octahexyl-substituted copper phthalocyanine. (14th February 2018)

• Record Type: Journal Article
• Authors: Watanabe, Ken; Watanabe, Koichi; Tohnai, Norimitsu; Itani, Hiromichi; Shimizu, Yo; Fujii, Akihiko; Ozaki, Masanori
• Is Part Of: Japanese journal of applied physics. Volume 57:Number 4(2018)Supplement
• Publication Date: 2018-02-14
• Subjects: Physics -- Periodicals; 621.05
• DOI: 10.7567/JJAP.57.04FL01
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: The charge carrier mobility of a solution-processable low-molecular-weight organic semiconductor material, i.e., 1, 4, 8, 11, 15, 18, 22, 25-octahexylphthalocyanine copper complex (C6PcCu), was investigated by the time-of-flight technique. The anomalous ambipolar carrier mobility was discussed from the viewpoint of the molecular packing structure, which was clarified by single-crystal X-ray structure analysis. In the comparison between the molecular packing structures of C6PcCu and its metal-free-type homologue, it was found that the difference in carrier mobility originates from the rotation of the molecule, which is caused by the steric hindrance due to the introduction of a center metal and the interpenetration of the nonperipheral alkyl chains.