[18p-PA5-1~28] 12.4 Organic light-emitting devices and organic transistors

[18p-PA5-12] Time Domain Reflectomfetry on Pentacene TFT for Time-resolved Analysis of Carrier Injection

〇Takuto Honda¹, Hiroaki Murakami¹, Masatoshi Sakai¹, Yugo Okada², Hiroshi Yamauchi¹, Yuichi Sadamitsu³, Yuta Hashimoto³, Nozomi Onodera³, Kazuhiro Kudo¹ (1.Graduate School of Science and Engineering., Chiba Univ., 2.Center for Frontier Science, Chiba Univ., 3.Nippon Kayaku Co., Ltd.)

Keywords:Pentacene, Organic thin film transistor, Carrier Injection

We propose time domain reflectometry to measure the carrier injection process of organic semiconductor transistor. In this method, a rectangular wave is sent to the sample and the instantaneous impedance is obtained from the waveform of the reflected wave. In this study, we analyzed time evolution of the impedance due to the carrier injection in the pentacene TFT structure when applying a voltage different from the previous reports and we will discuss the carrier injection dynamics both in the thickness direction and in-plane direction.