Presentation Information
[22a-P03-30]Nonlinear Electrical Characteristics of Lyotropic Liquid Crystalline Self-Doped Polythiophene Thin Films by Dedoping
〇(M1C)Motoaki Onishi1, Yuya Ishizaki1, Hirokazu Yano2, Hidenori Okuzaki3, Shusaku Nagano1 (1.Rikkyo Univ., 2.Tosoh Corp., 3.Yamanashi Univ.)
Keywords:
Conductive polymer,PEDOT,nonlinear property
The lyotropic liquid crystal character of self-doped polythiophene (S-PEDOT), which exhibits high electrical conductivity, was investigated by polarized optical microscopy (POM) and X-ray scattering (XRS) measurements of the concentrated solutions. We also fabricate main-chain shear-aligned films by utilizing the lyotropic liquid crystallinity of concentrated S-PEDOT solutions. We evaluated the orientation of the fabricated films by polarized optical microscopy (POM) observation, polarized UV-vis-NIR measurements, and grazing incidence X-ray scattering (GI-XRS) measurements. The conductive anisotropy was measured in the fabricated S-PEDOT alignment films. Furthermore, we found the nonlinear conductive properties in S-PEDOT thin films de-doped dilute amin aqueous solution. The responsive waves were examined by sinusoidal AC voltage input waveforms.