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Fully Integrated THz Schottky Detectors Using Metallic Nanowires as Bridge Contacts

Hajo, Ahid S. ; Preu, Sascha ; Kochkurov, Leonid ; Kusserow, Thomas ; Yilmazoglu, Oktay (2022)
Fully Integrated THz Schottky Detectors Using Metallic Nanowires as Bridge Contacts.
In: IEEE Access, 2022, 9
doi: 10.26083/tuprints-00020836
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Fully Integrated THz Schottky Detectors Using Metallic Nanowires as Bridge Contacts
Language: English
Date: 2022
Place of Publication: Darmstadt
Year of primary publication: 2022
Publisher: IEEE
Journal or Publication Title: IEEE Access
Volume of the journal: 9
DOI: 10.26083/tuprints-00020836
Corresponding Links:
Origin: Secondary publication service
Abstract:

This paper investigates fully integrated Terahertz (THz) Schottky detectors using silver (Ag) metallic nanowires (NWs) with 120 nm diameter as bridge contacts for zero-bias operating THz detectors based on highly doped Gallium Arsenide (GaAs) and Indium Gallium Arsenide (InGaAs) layers. The combination of InGaAs and metallic NWs shows improved performance at zero-bias than a GaAs based detector with a simulated capacitance of 0.5 fF and a series resistance of 29.7 Ω . Thus, the calculated maximum cut-off frequency of 2.6 THz was obtained for a NW contacted vertical InGaAs THz detector. Initial THz measurements were carried out using a common THz setup for frequencies up to 1.2 THz. A responsivity of 0.81 A/W and a low noise-equivalent power (NEP) value of 7 pW/√Hz at 1 THz were estimated using the measured IV-characteristics of the zero-bias NW-InGaAs based THz Schottky detector.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-208366
Classification DDC: 600 Technology, medicine, applied sciences > 600 Technology
600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) > Terahertz Devices and Systems
Date Deposited: 04 Apr 2022 12:30
Last Modified: 22 Aug 2022 12:35
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20836
PPN: 492711437
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