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Significant enhancement in the efficiency of photoconductive antennas using a hybrid graphene molybdenum disulphide structure

Zangeneh Nejad, F ; Sharif University of Technology | 2016

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  1. Type of Document: Article
  2. DOI: 10.1117/1.JNP.10.036005
  3. Publisher: SPIE , 2016
  4. Abstract:
  5. We propose a hybrid graphene molybdenum disulphide-based photoconductive antenna to overcome the restrictions of metallic photoconductive antennas and graphene-based photoconductive antennas, simultaneously. The structure is composed of a hybrid graphene-MoS2 strip as the antenna deposited on a low-temperature gallium arsenide substrate. A full-wave electromagnetic solver, namely, high frequency structural simulator (HFSS) is used to analyze the whole structure. It is shown that the proposed photoconductive antenna provides us with not only high input impedance and reconfigurability but also high values of matching efficiency and radiation efficiency. The impact of increasing MoS2 layers on the performance of the antenna is also investigated. © 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
  6. Keywords:
  7. Graphene ; Molybdenum disulphide ; photoconductive antenna ; Surface plasmon ; Efficiency ; Gallium alloys ; Gallium arsenide ; Molybdenum ; Molybdenum compounds ; Photoconductivity ; Sulfur compounds ; Temperature ; Electromagnetic solvers ; Gallium arsenide substrates ; High input impedance ; Photoconductive antennas ; Radiation efficiency ; Reconfigurable antenna ; Surface plasmons ; Antennas
  8. Source: Journal of Nanophotonics ; Volume 10, Issue 3 , 2016 ; 19342608 (ISSN)
  9. URL: https://www.spiedigitallibrary.org/journals/Journal-of-Nanophotonics/volume-10/issue-03/036005/Significant-enhancement-in-the-efficiency-of-photoconductive-antennas-using-a/10.1117/1.JNP.10.036005.full?SSO=1