[18p-C202-1~9] 17.2 Graphene

[18p-C202-8] Characterization of Electrical Properties of grapehen using optical dispersion ranging to THz frequency

Son Kento¹, 〇Takashi Fujii^1,3, Mouri Shinichiro¹, Araki Tsutomu¹, Kamoi Susumu², Iwamoto Toshiyuki³ (1.Ritsumeikan Univ., 2.Kyoto Prefectural Technology Center, 3.PNP)

Keywords:THz, graphene, dispersion

THz Time-domain Spectroscopy (THz-TDS), which is the pulsing spectroscopy using femtosecond laser, can instantly measure the electric amplitude and phase. Therefore, the complex permitivity can be essentially obtained using these results without K-K relations and the electric properties of conductive materials applying Drude-model can be analyzed. Recently, we have noncontuctlly and nondesdestructively characterize the electric properties of semiconductor epitaxial layers. In this report, we present the THz analysis for grapehen, which was grown on cupper foil. transcribed on CaF2 single crystal. At first, we measured the transmitting properties of grapehen on CaF2 using THz-TDS and analyzed the electric properties by Drude-model. We found the possibility to analyze the electric properties of grapehen.