[23p-B103-1~13] 12.5 Organic solar cells

[23p-B103-13] Time Resolved Analysis of Photoelectric Conversion Process in Multilayer-type OPV with Light Synchronized Time Domain Reflectometry

〇Tomoaki Mashiko¹, Masatoshi Sakai¹, Akira Kainoh¹, Sou Kuromasa¹, Kazuhiro Kudo¹, Hirofumi Mino² (1.Dept.Eng.,Chiba Univ., 2.Dept.Transdisc.,Chiba Univ.)

Keywords:organic photovoltaics, carrier dynamics, photoelectric conversion process

Time Domain Reflectometry (TDR) measures transient impedance that is effective in investigating the carrier dynamics in electronic devices. To clarify the initial carrier dynamics in organic photovoltaics (OPV), we measured the transient impedance by light synchronized TDR that observes the transient impedance in OPV during photoirradiation. In this study, we observed the delay time dependence and the excitation wavelength dependence of the time domain transmission waveforms through an OPV with a structure of Al/PC₆₁BM/Pentacene/ITO under UV and red LED irradiation.