基于石墨烯的NO_(2)和NH_(3)气体传感器研究进展

Research Progress of NO_(2) and NH_(3) Gas Sensors Based on Graphene

室温下石墨烯具有较大的分子吸附比表面积、低噪声、高载流子迁移率等优异电学性能,是一种性能极佳的传感材料。与传统无机氧化物气体传感器相比,石墨烯气体传感器具有工作温度低、能耗小、恢复性高的优点。文章对两种石墨烯气体传感器的研究进展进行了综述。首先根据气体选择性不同,研究了NO_(2)和NH_(3)两种石墨烯气体传感器。然后对它们的灵敏度、气体响应灵敏度、响应时间等特性进行了分析对比。该项分析研究工作对气体传感器的实际应用与推广具有一定参考价值。

At room temperature, graphene has excellent electrical properties such as large molecular adsorption specific surface area, low noise and high carrier mobility. Compared with traditional inorganic oxide gas sensors, graphene gas sensors have the advantages of low operating temperature, low energy consumption and high recovery. This paper reviewed the research progress of two graphene gas sensors. Firstly, NO_(2)and NH_(3) graphene gas sensors were studied according to different gas selectivity. Then their sensitivity, gas response sensitivity and response time were analyzed and compared. This analysis and research work has certain reference value for the practical application and popularization of gas sensor.