Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 3, Issue 11, Pages 2548-2556Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4tc02930e
Keywords
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Funding
- National Natural Science Foundation of China [11374240, 61275105, 10974152, 10834015, 11374358]
- Natural Science Basic Research Plan in Shaanxi Province of China [2012KJXX-27, 2012JM1019]
- Ph.D. Programs Foundation of Ministry of Education of China [20136101110007]
- Key Laboratory Science Research Plan of Shaanxi Education Department [13JS101]
- National Key Basic Research Program [2014CB339800]
- International Cooperative Program [201410780]
- Hong Kong Polytechnic University [1-ZVAL, 1-ZVAW]
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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.
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