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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. (Publisher's Version)
In: IEEE Access, 9, pp. 144046-144053. IEEE, e-ISSN 2169-3536,
DOI: 10.26083/tuprints-00020836,
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Item Type: Article
Origin: Secondary publication service
Status: Publisher's Version
Title: Fully Integrated THz Schottky Detectors Using Metallic Nanowires as Bridge Contacts
Language: English
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.

Journal or Publication Title: IEEE Access
Volume of the journal: 9
Place of Publication: Darmstadt
Publisher: IEEE
Classification DDC: 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
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
DOI: 10.26083/tuprints-00020836
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-208366
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20836
PPN: 492711437
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