Electrical Spin Injection at Chemically Modified Organic/Inorganic Interfaces

化学改性有机/无机界面的电自旋注射

• 批准号: 1207243
• 负责人: Ezekiel Johnston-Halperin
• 金额: $ 38.97万
• 依托单位: Ohio State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-06-01 至 2016-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1207243&HistoricalAwards=false
• 关键词: Electrical; Spin; Injection; Chemically; Modified

Technical Description: The central aim of this project is to determine the role of interface structure, chemistry and band alignment in spin transport and scattering in hybrid organic/inorganic heterostructures. The project consists of two components. The first is focused on using previously demonstrated spin-transport techniques to explore the impact of chemical modification and passivation of the inorganic surface on spin transport in hybrid organic/inorganic systems. The second focuses on the development of novel measurement geometries to directly probe the exchange interaction across the organic/inorganic interface for both bare and modified inorganic surfaces using the ultrafast pump-probe technique of ferromagnetic proximity polarization. The success of the project can help laying the foundation for the development of both hybrid and all-organic spintronic devices that exploit the relative ease of fabrication and inherent chemical functionality available in organic systems.Non-technical Description: This research project is on the integration of organic-based magnetic materials into the developing field of spintronics, which relies on exploiting the magnetic properties of materials for low-power and instant-on electronics. The use of organic-based materials can potentially lead to room-temperature operation, inexpensive fabrication and intrinsic chemical sensitivity for on-chip integration of chemical sensing. The expansion of organic electronics to include organic-based magnetic materials and devices allows the development of capabilities complementary to traditional solid-state spintronics in much the same fashion that organic light-emitting diodes and organic thin-film transistors have provided low-cost, easier-to-manufacture alternatives for more conventional inorganic electronic devices. In addition, the PI works with physics PhD students in collaborative teams that use "live" intellectual property to develop viable business plans for commercialization, in collaboration with the Technology Entrepreneurship and Commercialization Academy based in the Fischer College of Business at The Ohio State University. This training goes well beyond what is currently available to a typical PhD in physics and fills a critical gap in the development of our nation's STEM workforce.

技术描述：该项目的核心目的是确定在混合有机/无机异质结构中旋转传输和散射中界面结构，化学和带对齐的作用。该项目由两个组成部分组成。第一个重点是使用先前证明的自旋传输技术来探索化学修饰和无机表面对混合有机/无机系统中自旋传输的钝化的影响。第二个侧重于开发新的测量几何形状，直接使用铁磁性接近极化的Ultrafast Pump-probe技术来直接探测有机/无机界面上的交换相互作用。该项目的成功可以帮助为开发混合和全有机旋转器设备的开发奠定基础，从而利用有机系统中可用的相对易于制造和固有的化学功能的相对易于易于。使用有机材料的使用可能会导致室温运行，廉价的制造和内在的化学敏感性，以实现化学传感的芯片整合。有机电子设备的扩展，包括有机的磁性材料和设备，可以以与有机发光二极管和有机薄膜晶体管相同的方式发展与传统固态旋转的能力，从而提供了较低的水平，易于制造的替代品，以提供更多传统的内部电机电子设备。此外，PI与物理博士生合作的合作团队中，使用“实时”知识产权来制定可行的商业计划以进行商业化，并与俄亥俄州立大学Fischer商学院的技术创业和商业化学院合作。该培训远远超出了典型的物理学博士学位，并填补了我们国家STEM劳动力发展的关键空白。