TY - JOUR
T1 - THz-conductivity of CVD graphene on different substrates
AU - Gabriel, Daniel
AU - Sempere, Bernat
AU - Colominas, Carles
AU - Ferrer-Anglada, Núria
N1 - Publisher Copyright:
& Co. KGaA, Weinheim.
PY - 2015/11
Y1 - 2015/11
N2 - Optoelectronic properties of CVD graphene are characterized over a wide frequency range: THz, IR, visible, and near-UV. We used Raman spectroscopy to characterize the synthesized graphene films. All graphene layers were deposited on various substrates, some ones transparent or flexible, such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), quartz, and silicon. Transmission Terahertz time-domain spectroscopy (THz-TDS) method, in the range from 100GHz to 3THz, is used to analyze the transmittance, sheet conductivity, and attenuation of graphene and the complex refractive index of substrates. From IR, near-UV and visible spectroscopy we obtained the transmittance of the substrate and the sample at those frequency ranges, and we deduced the graphene transmittance on each substrate. We found that it is close to 97% in most cases.
AB - Optoelectronic properties of CVD graphene are characterized over a wide frequency range: THz, IR, visible, and near-UV. We used Raman spectroscopy to characterize the synthesized graphene films. All graphene layers were deposited on various substrates, some ones transparent or flexible, such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), quartz, and silicon. Transmission Terahertz time-domain spectroscopy (THz-TDS) method, in the range from 100GHz to 3THz, is used to analyze the transmittance, sheet conductivity, and attenuation of graphene and the complex refractive index of substrates. From IR, near-UV and visible spectroscopy we obtained the transmittance of the substrate and the sample at those frequency ranges, and we deduced the graphene transmittance on each substrate. We found that it is close to 97% in most cases.
KW - Graphene
KW - High frequency conductivity
KW - IR-UV-Vis spectroscopy
KW - THz-time domain spectroscopy
KW - Transmittance
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U2 - 10.1002/pssb.201552248
DO - 10.1002/pssb.201552248
M3 - Article
AN - SCOPUS:84946429434
SN - 0370-1972
VL - 252
SP - 2423
EP - 2428
JO - Physica Status Solidi (B) Basic Research
JF - Physica Status Solidi (B) Basic Research
IS - 11
ER -