Feasibility study of in-situ grown nanocrystalline graphene for humidity sensing

Dennis Noll, U. Schwalke
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引用次数: 3

Abstract

The application of in-situ transfer-free nanocrystalline graphene grown by polymer enhanced catalytic chemical vapor deposition [1] for sensing humidity in an atmospheric environment is investigated by electrical testing. Exposure of the graphene devices to humidity enriched air leads to a relative resistance change of an absolute value of up to 3.5%. Furthermore, post application of a hydrophobic hexamethyldisilazane self-assembled monolayer onto the graphene transistors is attempted leading to a shift of the charge neutrality point towards zero potential. Yet, our devices show more pronounced rayleigh scattering after the self-assembled monolayer application, decreasing the current by a factor of 3.
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原位生长纳米石墨烯用于湿度传感的可行性研究
通过电学测试,研究了聚合物增强催化化学气相沉积法生长的原位无转移纳米晶石墨烯[1]在大气环境中传感湿度的应用。将石墨烯器件暴露在富湿空气中会导致相对电阻绝对值变化高达3.5%。此外,在石墨烯晶体管上应用疏水六甲基二氮杂烷自组装单层后,试图使电荷中性点向零电位移动。然而,我们的器件在自组装单层应用后显示出更明显的瑞利散射,将电流降低了3倍。
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