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Continuous-wave terahertz emitter with hybrid nanoelectrodes based on graphene and nanowire

Jumaah, Alaa Jabbar ; Al-Daffaie, Shihab ; Yilmazoglu, Oktay ; Kusserow, Thomas (2022):
Continuous-wave terahertz emitter with hybrid nanoelectrodes based on graphene and nanowire. (Publisher's Version)
In: OSA Continuum, 3 (7), OSA, ISSN 2578-7519,
DOI: 10.26083/tuprints-00022083,
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Item Type: Article
Origin: Secondary publication via sponsored Golden Open Access
Status: Publisher's Version
Title: Continuous-wave terahertz emitter with hybrid nanoelectrodes based on graphene and nanowire
Language: English
Abstract:

Continuous-wave terahertz emitters based on photomixers with hybrid nanoelectrodes are investigated. The nanoelectrodes consist of a nitrogen-doped single layer of graphene and silver nanowires, placed on low-temperature-grown (LTG) GaAs as photoconductive material. Due to the high transparency of graphene and the low fill factor of nanowire nanoelectrodes, high photocurrents in the range from 260 μA to 1.8 mA can be reached. Despite their very small size nanoelectrodes provide the capability of handling rather high currents, leading to THz output signals reasonably three times higher than for conventional interdigitated finger electrodes for the whole measurement range. Measurement results of generated photocurrents and THz output signals are presented, showing the increased performance of our approach while maintaining highly reliable operation of the devices.

Journal or Publication Title: OSA Continuum
Volume of the journal: 3
Issue Number: 7
Place of Publication: Darmstadt
Publisher: OSA
Collation: 8 Seiten
Classification DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Divisions: 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP)
Date Deposited: 25 Aug 2022 12:05
Last Modified: 26 Aug 2022 09:55
DOI: 10.26083/tuprints-00022083
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-220834
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/22083
PPN: 498644901
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