Single Molecule Devices with Self-Aligned Contacts

具有自对准接触的单分子器件

• 批准号: 1006989
• 负责人: Zhenan Bao
• 金额: $ 45万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2014-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1006989&HistoricalAwards=false
• 关键词: Single; Molecule; Devices; Self; Aligned

Technical: This project aims for measurement and understanding of charge transport in single molecules. The approach to achieve ohmic contact is to synthesize conductor-organic semiconducting molecule-conductor with nanoscale metallic or molecularly doped contacts self-assembled or templated by DNAs. The conducting contacts are self-aligned and make contacts with each end of the organic semiconductor molecule (OSM) with length scale ranges from 5-100 nm. Precisely fabricated, ultrasmall gaps are not needed since the overall hybrid structure will be much longer than the organic molecule of interest. Experiments on electrostatic modification of molecular electronic states via a nearby strongly coupled gate electrode are included. The methods developed are expected to lay the groundwork for developing useful molecular electronic devices and eventually integrating them into complex circuits. Non-technical: The project addresses basic research issues in a topical area of materials science and macromolecular chemistry with technological relevance, and is expected to provide unique opportunities for graduate and undergraduate training in an interdisciplinary field. The proposed work will allow direct measurement of charge transport through single molecules with different chemical functionalities and length, providing critical information on whether organic molecules have sufficient performance for nanoelectronics. The PI will continue with her activities to reach out to a broad population ranging from K-12, community college, undergraduate, and graduate students as well as efforts to engage and prepare the teachers of tomorrow for new areas of science and technology. This project will expose both graduate students and undergraduates to organic chemistry, polymer chemistry, surface chemistry, materials and thin film characterization, device fabrication, and device characterization. Students will experience an interdisciplinary approach to problem solving and become equipped with a combination of technical engineering skills, basic scientific understanding, and communication skills. This project is co-supported by the DMR Electronic and Photonic Materials and CHE MSN (Macromolecular, Supramolecular and Nanochemistry) programs.

技术：该项目旨在测量和理解单分子中的电荷传输。实现欧姆接触的方法是通过自组装或以DNA为模板的纳米级金属或分子掺杂接触来合成导体-有机半导体分子-导体。导电触点是自对准的，并与有机半导体分子 (OSM) 的每一端接触，长度范围为 5-100 nm。不需要精确制造的超小间隙，因为整体混合结构将比感兴趣的有机分子长得多。包括通过附近的强耦合栅电极静电修饰分子电子态的实验。所开发的方法预计将为开发有用的分子电子器件并最终将其集成到复杂电路中奠定基础。非技术性：该项目解决具有技术相关性的材料科学和高分子化学主题领域的基础研究问题，预计为跨学科领域的研究生和本科生培训提供独特的机会。拟议的工作将允许直接测量通过具有不同化学功能和长度的单分子的电荷传输，提供关于有机分子是否具有足够的纳米电子学性能的关键信息。 PI 将继续开展活动，接触 K-12、社区学院、本科生和研究生等广泛人群，并努力吸引和培养未来教师进入新的科学技术领域。该项目将使研究生和本科生接触有机化学、高分子化学、表面化学、材料和薄膜表征、器件制造和器件表征。学生将体验解决问题的跨学科方法，并具备技术工程技能、基本科学理解和沟通技巧。该项目得到了DMR电子与光子材料和CHE MSN（高分子、超分子和纳米化学）项目的共同支持。