Terahertz characteristics of graphene deposited on different substrates

Chen Gong; Kaijun Mu; Jian Zuo; Cunlin Zhang

doi:10.1117/12.2246029

3 November 2016 Terahertz characteristics of graphene deposited on different substrates

Chen Gong, Kaijun Mu, Jian Zuo, Cunlin Zhang

Proceedings Volume 10030, Infrared, Millimeter-Wave, and Terahertz Technologies IV; 1003022 (2016) https://doi.org/10.1117/12.2246029
Event: SPIE/COS Photonics Asia, 2016, Beijing, China

Abstract

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.

Citation Download Citation

Chen Gong, Kaijun Mu, Jian Zuo, and Cunlin Zhang "Terahertz characteristics of graphene deposited on different substrates", Proc. SPIE 10030, Infrared, Millimeter-Wave, and Terahertz Technologies IV, 1003022 (3 November 2016); https://doi.org/10.1117/12.2246029

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