NER: Nanoscale Organic Spintronics

NER：纳米级有机自旋电子学

• 批准号: 0608854
• 负责人: Marc Cahay
• 金额: $ 10万
• 依托单位: University of Cincinnati Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-07-01 至 2008-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0608854&HistoricalAwards=false
• 关键词: NER; Nanoscale; Organic; Spintronics

The objective of this research is to investigate nanoscale organic spintronics and organic opto-spintronics based on n-conjugated polymers. By injecting spin polarized electrons and holes into self assembled heterolayered organic nanowires using magnetically aligned ferromagnetic contacts, it will be possible to suppress the non-emissive triplet electron hole recombination and promote the singlet electron hole recombination. This will increase quantum efficiency and produce bright organic light emitting nanodiodes. Our recent work has demonstrated exceptionally long spin relaxation times in n-conjugated polymers. This is promising for the development of nanowire based organic magnetic random access memory based on spin valves. Since the memory devices will be nanowires with a density 1011 cm-2, extremely high density memory is feasible.The intellectual merit of this work consists of elucidating spin transport in organics, providing critical understanding of spin relaxation modes, and building the framework necessary for the realization of nanoscale organic opto-spintronics.The broad impact will be the possible realization of spin-enhanced bright organic light emitting diodes. These inexpensive light sources will be compatible with flexible substrates and will be produced by simple beaker electrochemistry. It is anticipated that there is a significant demand for these products. An additional outcome will be organic based nanowire magnetic random access memory elements which are non-volatile. Graduate students trained in this program will be valuable assets in the emerging marketplace.

本论文的主要目的是研究基于n-共轭聚合物的纳米有机自旋电子学和有机光自旋电子学。通过使用磁性对准的铁磁接触将自旋极化的电子和空穴注入到自组装的异质层状有机纳米线中，将有可能抑制非发射的三重态电子空穴复合并促进单重态电子空穴复合。这将增加量子效率并产生明亮的有机发光纳米二极管。我们最近的工作已经证明了异常长的自旋弛豫时间在n-共轭聚合物。这对基于自旋阀的纳米线有机磁存储器的发展具有重要意义。由于存储器件将是密度为1011 cm-2的纳米线，因此极高密度的存储器是可行的。这项工作的智力价值包括阐明有机物中的自旋输运，提供对自旋弛豫模式的关键理解，并建立了实现纳米有机光自旋电子学所必需的框架。其广泛的影响将是自旋电子学的可能实现，增强明亮的有机发光二极管。这些廉价的光源将与柔性基板兼容，并将通过简单的烧杯电化学生产。预计对这些产品的需求很大。另一个结果将是基于有机的纳米线磁性随机存取存储器元件，其是非易失性的。在这个项目中培养的研究生将成为新兴市场的宝贵资产。