Title :
Performance Enhancement of Plasmonic Sub-Terahertz Detector Based on Antenna Integrated Low-Impedance Silicon MOSFET
Author :
Min Woo Ryu ; Kwan Sung Kim ; Jeong Seop Lee ; Kibog Park ; Jong-Ryul Yang ; Seong-Tae Han ; Kyung Rok Kim
Author_Institution :
Sch. of Electr. & Comput. Eng., Ulsan Nat. Inst. of Sci. & Technol., Ulsan, South Korea
Abstract :
We demonstrate the performance enhancement of field-effect transistor (FET)-based plasmonic terahertz (THz) detector with monolithic integrated antenna in low-impedance regime and report the experimental results of Si MOSFET impedance in THz regime using 0.2-THz measurement system. By designing FET with low-impedance ranges (<;1 kΩ) and integrating antennas with impedances of 50 and 100 Ω, we found that our low-impedance MOSFETs have the input impedance criterion of 50 Ω at 0.2 THz and the MOSFETs with thinner gate oxide show the highly enhanced plasmonic photoresponses at 50-Ω antenna by 325 times from the result of the detector without antenna.
Keywords :
MOSFET; elemental semiconductors; plasmonics; silicon; submillimetre wave antennas; submillimetre wave detectors; submillimetre wave transistors; Si; field-effect transistor based plasmonic THz detector; frequency 0.2 THz; gate oxide; highly enhanced plasmonic photoresponses; low-impedance MOSFET; monolithic integrated antenna; performance enhancement; plasmonic subterahertz detector; Antennas; Detectors; Impedance; MOSFET; Plasmons; Silicon; MOSFET; detector; impedance; photoresponse; plasmonic; terahertz;
Journal_Title :
Electron Device Letters, IEEE
DOI :
10.1109/LED.2015.2394446
