BROWSE

Related Researcher

Author's Photo

Ruoff, Rodney S.
Center for Multidimensional Carbon Materials (CMCM)
Research Interests
  • Next generation carbons, ultrathin sp3-bonded carbon sheets, negative curvature (‘Schwartzites’) carbons, sp3/sp2 hybrid carbon materials, model compounds for novel carbon materials, reaction mechanisms

ITEM VIEW & DOWNLOAD

Reference-free THz-TDS conductivity analysis of thin conducting films

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Reference-free THz-TDS conductivity analysis of thin conducting films
Author
Whelan, Patrick R.Shen, QianLuo, DaWang, MeihuiRuoff, Rodney S.Jepsen, Peter U.Boggild, PeterZhou, Binbin
Issue Date
2020-09
Publisher
OPTICAL SOC AMER
Citation
OPTICS EXPRESS, v.28, no.20, pp.28819 - 28830
Abstract
We present a reference-free method to determine electrical parameters of thin conducting films by steady state transmission-mode terahertz time-domain spectroscopy (THz-TDS). We demonstrate that the frequency-dependent AC conductivity of graphene can be acquired by comparing the directly transmitted THz pulse with a transient internal reflection within the substrate which avoids the need for a standard reference scan. The DC sheet conductivity, scattering time, carrier density, mobility, and Fermi velocity of graphene are retrieved subsequently by fitting the AC conductivity with the Drude model. This reference-free method was investigated with two complementary THz setups: one commercial fibre-coupled THz spectrometer with fast scanning rate (0.2-1.5 THz) and one air-plasma based ultra-broadband THz spectrometer for greatly extended frequency range (2-10 THz). Certain propagation correction terms for more accurate retrieval of electrical parameters are discussed. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
URI
https://scholarworks.unist.ac.kr/handle/201301/49299
URL
https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-28-20-28819&id=439583
DOI
10.1364/OE.402447
ISSN
1094-4087
Appears in Collections:
CHM_Journal Papers
Files in This Item:
oe-28-20-28819.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU