基于石墨烯多层膜的集成OTFT气体传感器阵列研究

Graphene, a new kind of material, has received widespread attention in the field of gas sensors. Organic thin film transistor (OTFT) gas sensor array is also a hot and difficult field in the international gas sensors, but the sensitive mechanism and regulation mechanism of this kind of sensors are not clear. This project intends to choose graphene as main sensitive materials, prepare the OTFT gas sensor array based on graphene combined with other sensitive materials, and research the influence of the sensitive material composition and structure of organic thin film transistor on the sensor’s performance. At the same time, we will research the integrated converting circuit of the OTFT gas sensor array, and in the end, obtain the integrated organic thin film transistor gas sensor array, which provides a key theoretical and technical basis for mixed gas detection. The sensor research will effectively promote domestic novel sensor technology research, and promote the development of electronic nose technology and the progress of the sensitive electronics and sensor technology.

石墨烯作为一种新材料，在气体传感器领域受到广泛关注。而有机薄膜晶体管气体传感器阵列也是国际传感器领域的一个研究热点及难点，但其敏感机理、性能调控机制等还不清楚。本项目拟选择石墨烯作为主要敏感材料，结合其他敏感材料，制备有机薄膜晶体管气体传感器阵列，探索敏感材料组分及结构对有机薄膜晶体管及气体传感器性能的影响机制，同时，结合气体传感器阵列集成变送电路的研究，制备出集成式有机薄膜晶体管气体传感器阵列，为混合气体检测提供关键理论及技术基础。该传感器的研究将有力地推动国内新型传感器技术的研究，对促进电子鼻技术的发展及敏感电子学与传感器技术的进步有着十分重要的意义。

本项目属传感技术及系统领域。将石墨烯及衍生物作为敏感材料，制备出具有显著气敏响应的新型气体传感器。项目设计并制备了基于P3HT、P3HT-ZnO, P3HT-MoS2, P3HT-RGO,的有机薄膜晶体管气体传感器，测试了器件的基本电学性能和气敏性能，研究了它们对NO2、NH3等气体的敏感性能，在薄膜表征的基础上对其相关机理进行了分析。同时，项目还研究了OTFT传感器阵列变送电路设计与仿真。项目相关成果申请国家发明专利37项（授权11项），发表高水平学术论文28篇（全部标注自然科学基金资助，其中《SCI》25篇，会议论文3篇），编写专著1部。