【摘 要】
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In this paper, reduced graphene oxide (RGO) thin film were prepared by spin-coating method to detect NO2 gas at different temperatures.Results showed that the sensing response to 10ppm NO2 increased w
【机 构】
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Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry of China, Chongqin
【出 处】
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第十四届全国敏感元件与传感器学术会议
论文部分内容阅读
In this paper, reduced graphene oxide (RGO) thin film were prepared by spin-coating method to detect NO2 gas at different temperatures.Results showed that the sensing response to 10ppm NO2 increased with elevating temperature ranging from 25℃ to 120℃, while the recovery ratio attained largest at 100℃.In addition, electric resistance of RGO sensors would undergo a continuous decrease with rising temperature, which was consistent with semiconducting properties.Meanwhile, the dynamic transients indicated that the duration time of fast response part reached biggest at 100℃.The effect of gas flow rate on AR/R0 showed that R decreased as flow rate rose, and vice versa.Annealing at 300℃ substantially eliminated this fluctuation to a negligible level.
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