Evaluation of Graphene Nanoribbons for Lateral Bandgap Engineered Devices

摘要ECCS-0802125 D。耶拿，圣母大学目的：这项研究的目的是研究不同宽度的石墨烯薄条是否可以用来模拟半导体异质结构，这些异质结构构成了许多高性能电子器件的支柱。 该方法是将石墨烯图案化成不同宽度的纳米级条带，并研究这种横向带隙工程器件的电荷传输和开关特性。 使用理论建模和精心设计的实验相结合，提出将研究石墨烯纳米带中横向带隙工程的器件潜力，从而演示复杂电子电路的基本构建模块，如整流器和开关。这里提出的研究预计将导致开发在广泛的应用中使用石墨烯纳米带的方法，例如晶体管，以及长波长光发射器和光电探测器。 由于碳纳米结构不受晶格匹配要求的限制，因此它们可以构建在任何基底上，例如玻璃或柔性/可拉伸基底。 它们的上级电子性能和低成本有望引领未来几代大面积电子、光电和传感器技术。更广泛的影响：该项目支持两名本科生和两名研究生。 一个推广方案包括与一名高中教师合作，为当地高中学生现场实验演示纳米级扫描探针技术。 通过出版物和在会议上介绍来传播研究成果，并将其纳入研究人员讲授的课程，将确保向尽可能广泛的受众推广拟议的研究。

AbstractECCS-0802125D. Jena, University of Notre DameObjective: The objective of this research is to invstigate whether thin strips of graphene of varying widths can be used to mimic semiconductor heterostructures which form the backbone of many high-performance electronic devices. The approach is to pattern graphene into nanoscale ribbons of varying widths and to investigate the charge tranport and switching properties of such lateral bandgap-engineered devices. Using a combination of theoretical modeling and carefully designed experiments, it is proposed that the device potential of lateral bandgap engineering in graphene nanoribbons will be investigated, leading to the demonstration of the basic building blocks of complex electronic circuits such as rectifiers and switches.Intellectual Merit: The research proposed here is expected to lead to the development of methods to use graphene nanoribbons in a wide range of applications such as transistors, and long-wavelength optical emitters and photodetectors. Since carbon nanostructures are not constrained by lattice-matching requirements, they can be built on any substrates such as glass or flexible/strechable substrates. Their superior electronic properties and low-cost is expected to lead to future generations of large-area electronic, optoelectronic, and sensor technologies.Broader Impact: The project supports two undergraduate students and two graduate students. An outreach program comprises an on-site experimental demonstration of nanoscale scanning probe techniques for local high-school students with the collaboration with a high-school teacher. The dissemination of research results by publications and presentations at conferences, and its inclusion in courses taught by the investigators will ensure the outreach of the research proposed to the widest possible audience.