Experimental Investigation of Graphene Layers as 2D Nanoelectrode for Continuous Wave Terahertz Generation

Publikationstyp
Conference Paper
Date Issued
2019-09-01
Sprache
German
Author(s)
Jumaah, Alaa Jabbar
Al-Daffaie, Shihab
Yilmazoglu, Oktay
Kuppers, Franko
Kusserow, Thomas
TORE-URI
http://hdl.handle.net/11420/9681
Article Number
8874024
Citation
International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2019)
Contribution to Conference
International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019
Publisher DOI
10.1109/IRMMW-THz.2019.8874024
Scopus ID
2-s2.0-85074691572
ISBN of container
978-153868285-2
The effect of using graphene as 2D nanoelectrode for continuous wave (CW) terahertz (THz) photomixers were investigated. The multilayer graphene (6-8 and 3-5 MLG) sheets were used as six-finger interdigital nanoelectrodes on a low-temperature-grown (LTG) GaAs photoconductor. The MLG nanoelectrode shows unique properties with high short-circuit current capabilities and reliable high photocurrents. The number of graphene layers play a big role on the electrical and the optical properties of graphene nanoelectrode. In one hand, a thinner graphene increases the transparency of the nanoelectrodes to improve the power conversion efficiency, and on the other hand, a thicker graphene is required to carry high current densities and enhance the photomixer performance.