Defect Engineered Graphene Gate in a Subthreshold SiC MESFET for Emissions Sensing

该计划的目标是开发一种紧凑、实用、新颖的三端方法，利用石墨烯固有的单分子灵敏度来感测和区分排放气体。这将使用亚阈值碳化硅金属半导体场效应晶体管和有源外延生长的石墨烯栅极作为有源换能器来实现，以提供仅使用碳化硅和石墨烯无法实现的性能优势。智能的优点在于将次要的设计原理应用于碳化硅器件和气体传感器，这两种技术到目前为止都还没有实现。此外，还将研究使用紧凑型固态设备区分气体的模式，这是气体传感领域的一个潜在的变革性概念。其更广泛的影响包括在恶劣环境传感、排放监测和家庭低成本气体监测中的应用。如果成功，这将为这些监测问题提供变革性的低成本解决方案，其中一些目前无法执行。最后，这项工作将资助3个专业的10分钟视频(由联合PI&AMP；提名艾美奖纪录片制作人L.Kissel制作)，为外行记录这个项目中的科学过程，并为招收学生进入科学技术、工程和数学领域开发材料。该项目将继续南卡罗来纳大学扩大多样性的承诺，通过招收少数族裔学生，寻求使大学的人口结构与周围县的人口结构相匹配。该项目将涉及至少1名非裔美国博士生。

The objective of this program is to develop a compact, practical, novel 3-terminal approach to sensing and distinguishing emissions gases using graphene's intrinsic single molecule sensitivity. This is to be accomplished using a subthreshold Silicon Carbide Metal Semiconductor Field Effect Transistor with an active epitaxially grown graphene gate as the active transducer to provide performance advantages not possible with SiC and graphene alone. The intellectual merit lies in applying subthrehsold design principles to SiC devices, as well as to gas sensors, neither of which has been done to date. Furthermore, the modes of distinguishing between gases using a compact solid-state device will be investigated, a potentially transformative concept in the realm of gas sensing.The broader impacts of this include applications in harsh-environment sensing, emissions monitoring and low-cost gas-monitoring for homes. If successful, this will provide transformational low-cost solutions to these monitoring problems, some of which are currently un-enforceable. Finally, this effort will fund 3 professional 10-minute videos (by Co-PI & Emmy-nominated documentary maker L. Kissel) documenting the scientific process in this project for the layman, and to develop materials for recruitment of students into Science and Technology, Engineering and Math fields. This project will continue University of South Carolina's commitment to expanding diversity, by seeking to match the University demographic makeup with that of the surrounding counties, through recruitment of minority students. This project will involve at least 1 African-American PhD student.