3 November 2016 Terahertz characteristics of graphene deposited on different substrates
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Graphene is a promising candidate material for ultra-broadband photodetectors, as it interacts with light strongly from microwave to ultraviolet. We have characterized terahertz response from monolayer graphene samples deposited on sapphire, poly(methyl methacrylate) (PMMA), and high-resistivity silicon (HRS) substrates. The transmittance and sheet conductivity, and attenuation of graphene samples were obtained from transmission terahertz time-domain spectroscopy (THz-TDS). The mechanisms that contribute to the optical response of graphene were quite diverse among the different substrate media used. The results are promising for the development of modulators and switchable photoelectric devices.
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Chen Gong, Chen Gong, Kaijun Mu, Kaijun Mu, Jian Zuo, Jian Zuo, Cunlin Zhang, Cunlin Zhang, } "Terahertz characteristics of graphene deposited on different substrates", Proc. SPIE 10030, Infrared, Millimeter-Wave, and Terahertz Technologies IV, 1003022 (3 November 2016); doi: 10.1117/12.2246029; https://doi.org/10.1117/12.2246029

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