[12a-N207-1~10] 12.3 Functional Materials and Novel Devices

[12a-N207-7] [Molecular Electronics and Bioelectronics Division Award Speech] Development of electret-based vibrational energy generator utilizing spontaneous orientation of polar organic molecules

〇Yuya Tanaka^1,2,3, Noritaka Matsuura², Hisao Ishii^1,2,4 (1.CFS, Chiba Univ., 2.GSSE, Chiba Univ., 3.JST PRESTO, 4.MCRC, Chiba Univ.)

Keywords:energy harvesting, electret, orientation polarization

In recent years, electret-based vibrational energy generators (VEGs) have attracted attention because they can generate electricity from ambient vibrations. But, the fabrication of electrets requires a charging process, which is one of the factors preventing mass production. We recently proposed using spontaneously oriented polar organic molecules, which are OLED materials such as Alq3 and TPBi, as electrets, and realized VEGs that do not require any charging process. In this talk, we will introduce the principle of its operation, and enhanced output power and lifetime by utilizing organic electronics technology.