Solution-processable reduced graphene oxide films as broadband terahertz wave impedance matching layers

Yixuan Zhou, E. Yiwen, Zhaoyu Ren, Haiming Fan, Xinlong Xu, Xinliang Zheng, Dang Yuan Lei, Weilong Li, Li Wang, Jintao Bai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

34 Citations (Scopus)

Abstract

The potential of solution-processable reduced graphene oxide (rGO) films as wave impedance matching layers has been examined in a broad terahertz (THz) spectral bandwidth. The THz sheet conductivities of rGO films measured by THz time-domain spectroscopy were observed to be tunable and sensitive to the film thicknesses and reduction degrees, which can be efficiently controlled by our solution-processable fabrication method. Remarkable broadband impedance matching was achieved with a suitable rGO film, as shown by the suppression of the internal reflected THz pulses from the substrate in the spectra. The underlying mechanisms have been revealed both experimentally and theoretically. This work paves the way for developing rGO-based broadband and large-scale anti-reflection layers for THz components.
Original languageEnglish
Pages (from-to)2548-2556
Number of pages9
JournalJournal of Materials Chemistry C
Volume3
Issue number11
DOIs
Publication statusPublished - 1 Jan 2015

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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