基于栅控石墨烯纳米带阵列的室温太赫兹宽带探测器

项目名称： 基于栅控石墨烯纳米带阵列的室温太赫兹宽带探测器

项目编号： No.61474011

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 温中泉

作者单位： 重庆大学

项目金额： 80万元

中文摘要： 在日益复杂的国内外形势下，反恐、安检、缉毒等领域对便携式太赫兹成像/光谱系统需求日益迫切。太赫兹系统微小型化对探测器提出了微型化、高灵敏度、宽带、室温工作等更高要求。基于热原理、等离子体波和光子探测原理的直接THz探测技术是实现THz探测微型化、高灵敏的重要途径；但这些探测技术分别在工作温度、响应带宽和响应速度等方面仍存在不足，在诸多应用中受限。本项目以高灵敏、高速室温THz宽带探测器为对象，以侧向限制与垂直电场作用下双层石墨烯的能隙双重调控机制的研究为切入点，探索太赫兹波与石墨烯相互作用的物理机制，系统研究基于栅控石墨烯纳米带的THz探测器的建模及设计方法，突破带宽拓展技术；提出以纳米线为掩模的石墨烯纳米带阵列加工方法，研制基于栅控石墨烯纳米带阵列的室温THz宽带探测器原理样品，完成模型验证；为灵敏度高、响应快的微型室温THz宽带探测器的集成设计与低成本高效制造奠定重要的理论和技术支撑。

中文关键词： 太赫兹探测器；石墨烯纳米带；宽带；纳米线；能隙调控

英文摘要： In an increasingly complex domestic and international situation, the demands for portable terahertz imaging/spectroscopy system are more and more urgent. Miniaturization, high sensitivity, wide bandwidth and being work in room temperature are continuing trends for micro terahertz system. The direct THz detection technologies based on thermo sensitive，plasma wave and photon detection are the important methods to realize a miniaturized and high-sensitive THz detector. But these detectors are restricted in application currently owing to the deficiencies in operating temperature, response bandwidth and response speed, etc. This project aims at a broadband THz detector with high sensitivity at room temperature. This project will research the dual regulation of the graphene layers bandgap adopting lateral restraint and vertical electric field, explore the physical mechanism of interaction of THz wave and graphene, systemically research the methods of modeling and design of the THz detector based on gated graphene nanoribbons, for achieving the expansion of frequency band. A new process adopting nanowires mask is proposed to manufacture the graphene nanoribbons，and the prototype of THz detector based on gated graphene nanoribbons would be manufactured and tested for validation of the proposed model. This project can provide important theory foundations and technologies support for the integrated design and efficiently low-cost fabrication of high-sensitive, rapid and miniature THz wideband detector under room temperature.

英文关键词： Terahertz Detector;Graphene Nanoribbon;Broadband;Nanowire;Bandgap Regulation