Highly Transparent Graphene Electrodes for CW THz Applications

Publikationstyp
Conference Paper
Date Issued
2020-11-08
Sprache
English
Author(s)
Jumaah, Alaa Jabbar  
Al-Daffaie, Shihab  
Kusserow, Thomas  
Monroy, Idelfonso Tafur  
TORE-URI
http://hdl.handle.net/11420/9675
Start Page
202
End Page
203
Article Number
9370966
Citation
International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2020)
Contribution to Conference
International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW 2020  
Publisher DOI
10.1109/IRMMW-THz46771.2020.9370966
Scopus ID
2-s2.0-85103164538
Transparent graphene-based electrodes for CW THz devices are intensively investigated here. The multilayer graphene (MLG) electrodes were transferred on top of Low temperature GaAs (LT-GaAs) as photoconductive material. The high transparency of the graphene allows 97% of the light to propagate through the transparent electrodes and increase the effective illuminated area. This will increase the carrier density, which leads to higher generated photocurrent. The simulation predicts more than one order of magnitude higher photocurrent can be reached by using multilayer graphene instead of a metal, such as gold. The benefits of using MLG instead of metal conductor results in a 40 times higher photocurrent than the photocurrent using gold electrodes at 20 V bias voltage.