25 August 2017 Visible light irradiation-induced conductivity change for CVD-grown graphene on different substrates
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Abstract
This research examines the influence of lighting on the electrical properties of graphene on different substrates, including PET, glass and SiO2, which are the most widely used substrate materials representing the flexible and rigid applications. The graphene sheets were prepared by CVD and subsequently transferred to three substrates. The resistances of graphene under periodic visible light irradiation were measured inside a vacuum chamber. Results show that the resistances for graphene samples on all substrates increased slowly under lighting, while decreased slowly as well after the light was switched off. The change degree and speed were different for graphene on different substrates, which were influenced as well by the illumination time, environment atmosphere and irradiation power. Graphene on flexible PET substrate is more stable than that on other substrates.
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Xiangdi Li, Peng Zhang, Xianming Liu, Xueying Cao, Xiaohua Lei, Weimin Chen, "Visible light irradiation-induced conductivity change for CVD-grown graphene on different substrates", Proc. SPIE 10349, Low-Dimensional Materials and Devices 2017, 1034912 (25 August 2017); doi: 10.1117/12.2271751; https://doi.org/10.1117/12.2271751
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