[9p-E207-1~12] 12.3 Functional Materials and Novel Devices

3:30 PM - 3:45 PM JST(6:30 AM - 6:45 AM UTC)

[9p-E207-8] Corona Poling Polarity and Electrode Material Dependence of SHG in Vapor-deposited Polyurea thin films

〇Serina Tamaki¹, Ryosuke Matsubara¹, Atsushi Kubono¹, Masayoshi Yamiya¹, Yu Masuda¹, Wataru Inami¹, Yoshimasa Kawata¹, Atsushi Sugita¹ (1.Shizuoka Univ.)

Keywords:

second harmonic generation,Polyurea thin film,corona poling

We previously reported that polyurea thin films fabricated by vapor deposition polymerization exhibited second-harmonic generation (SHG) after corona-poling. In this presentation, we report the dependence of the SHG intensity on the electrode material and polarity of corona-poling. For film fabricated on aluminum electrodes, the SHG intensity of the film poled under negative corona-discharge exhibited 2.8 times higher SHG than that poled under positive corona discharge. In contrast for the film fabricated on the gold electrodes, the SHG intensity of the negatively discharged film was approximately 20 % of that of the positively discharged film. These results suggested that the polar order of the urea dipole was strongly influenced by the interfacial interactions between the electrode surface and urea dipoles, as well as by the accumulation of the charged or reactive species on the film surface during the corona discharge.