Non-Linear Conductivity Response of Graphene on Thin-Film PET Characterized by Transmission and Reflection Air-Plasma THz-TDS-Reference-Cited by-同舟云学术

Non-Linear Conductivity Response of Graphene on Thin-Film PET Characterized by Transmission and Reflection Air-Plasma THz-TDS

Published:2023-03-31 Issue:7 Volume:23 Page:3669
ISSN:1424-8220
Container-title:Sensors
language:en
Short-container-title:Sensors

Author:

Zhou Binbin¹^ORCID,Rasmussen Mattias¹^ORCID,Whelan Patrick Rebsdorf²,Ji Jie²,Shivayogimath Abhay²^ORCID,Bøggild Peter²^ORCID,Jepsen Peter Uhd¹^ORCID

Affiliation:

1. Department of Electrical and Photonics Engineering, Technical University of Denmark, 2800 Kongens Lyngby, Denmark

2. Department of Physics, Technical University of Denmark, 2800 Kongens Lyngby, Denmark

Abstract

We demonstrate that the conductivity of graphene on thin-film polymer substrates can be accurately determined by reflection-mode air-plasma-based THz time-domain spectroscopy (THz-TDS). The phase uncertainty issue associated with reflection measurements is discussed, and our implementation is validated by convincing agreement with graphene electrical properties extracted from more conventional transmission-mode measurements. Both the reflection and transmission THz-TDS measurements reveal strong non-linear and instantaneous conductivity depletion across an ultra-broad bandwidth (1–9 THz) under relatively high incident THz electrical field strengths (up to 1050 kV/cm).

Funder

Velux Fonden

Independent Research Fund Denmark

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry

Link

https://www.mdpi.com/1424-8220/23/7/3669/pdf

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