[20p-E206-1~11] 3.9 Terahertz technologies

△ [20p-E206-6] Thermoelectric Design of Carbon Nanotube Terahertz Sensor with PN junctions for High Sensitive Detection

〇(M1)Ryogo Utaki¹, Kou Li¹, Meiling Sun¹, Yu Tokumoto¹, Yukio Kawano¹ (1.Tokyo Tech FIRST)

Keywords:High sensitive THz wave detection, Carbon nanotube, Photo-thermoelectric effect

These days, the development of further sensitive terahertz(THz) detector has been demanded for industrial application of THz imaging or sensing. Our THz detectors are based on Carbon Nanotube(CNT) and detect THz wave by photo-thermoelectric effect. So, sensitivity enhancements can be realized by increasing the THz-induced temperature difference in CNT. In this work, we newly combined micro Peltier modules as coolants with a conventional CNT detector, and successfully enhanced the sensitivity in the THz wave detection by a factor of 4 through keeping much higher temperature difference in this detector and confirmed responsiveness to THz wave in the broadband.