EAGER: Graphene-Nanoribbons of Controlled Width and Crystallographic-Orientation

EAGER：宽度和晶体取向受控的石墨烯纳米带

• 批准号: 0939523
• 负责人: Vikas Berry
• 金额: $ 7.6万
• 依托单位: Kansas State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2010-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0939523&HistoricalAwards=false
• 关键词: EAGER; Graphene; Nanoribbons; Controlled; Width

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).The research objective of this award is to develop a novel synthesis process to produce graphene nanoribbons (GNRs) with width controlled at a resolution of 1 nm and crystallographic-orientation (CO) controlled at a resolution of 50 (with controlled zig-zag, arm-chain or mixed edges). The process involves the use of a ultramicrotome to precisely slice a highly-oriented-pyrolytic-graphite (HOPG) block into graphite nanoblocks (GNB), which will then be chemically exfoliated to produce GNRs. A detailed study will be conducted to characterize the electrical and structural properties of GNRs and to determine the effect of the width and the CO on the band-gap and the carrier mobility of GNRs. Other parameters and effects which will be studied include: carrier transport mechanism, edge & surface defects, edge functionalization, width deviations along length and GNR wrinkling & folding. Correlations will be developed to define the effect of the synthesis process parameters on the structural properties of the GNRs.If successful, the results of this research will develop an efficient process to synthesize GNRs at high-throughput with controlled width & CO and will provide detailed correlations between the structural and the electrical properties of the GNRs. This will enable confirmation of theory and development of GNR-applications of interest to the semiconductor industry including FETs, logic devices and sensors. The success of this project will further expedite GNR research by providing researchers with access to a fast, simple, low-cost and controlled GNR synthesis process. The research results will be incorporated into coursework and disseminated through journal-publications and presentations at national meetings. One PhD student and one undergraduate student will be directly trained on this project.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。该奖项的研究目标是开发一种新的合成工艺，以生产石墨烯纳米带（GNR），其宽度控制在1 nm的分辨率，晶体取向（CO）控制在50的分辨率（具有受控的锯齿形，臂链或混合边缘）。 该过程涉及使用超薄切片机将高度定向热解石墨（HOPG）块精确切成石墨纳米块（GNB），然后将其化学剥离以产生GNR。 我们将进行详细的研究，以表征GNRs的电学和结构特性，并确定宽度和CO对GNRs的带隙和载流子迁移率的影响。其他的参数和影响，将被研究包括：载流子输运机制，边缘表面缺陷，边缘功能化，宽度偏差沿着长度和GNR的褶皱折叠。相关性将被开发，以定义的GNRs的结构properties的合成工艺参数的影响，如果成功的话，本研究的结果将开发一个有效的过程中，以高产量与控制宽度CO合成GNRs，并将提供详细的GNRs的结构和电气性能之间的相关性。这将使理论的确认和GNR-半导体行业的利益，包括FET，逻辑器件和传感器的应用的发展。该项目的成功将通过为研究人员提供快速，简单，低成本和受控的GNR合成工艺来进一步加快GNR的研究。研究成果将纳入课程作业，并通过期刊出版物和在国家会议上的介绍加以传播。一名博士生和一名本科生将直接接受该项目的培训。