High efficiency light emitting devices using nanostructured ZnO

使用纳米结构 ZnO 的高效发光器件

• 批准号: 0925587
• 负责人: Jungsang Kim
• 金额: $ 35万
• 依托单位: Duke 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: 2009-09-01 至 2013-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0925587&HistoricalAwards=false
• 关键词: efficiency; light; emitting; devices; using

"This award is funded under the American Recoveryy and Reinvestment Act of 2009 (Public Law 111-5)."The objective of this proposal is to study chemically synthesized ZnO nanowires for potential application in high performance light emitting diode applications. The comprehensive research proposal combines expertise in material synthesis, advanced optical characterization of semiconductor materials, and device design and fabrication capabilities to develop fundamental understanding of the light emission mechanisms in ZnO nanostructures, which will be applied to the realization of light emitting diodes with high luminous efficacy and luminous flux.The intellectual merit of this proposal stems from its strong interdisciplinary nature. The research activities will encompass (1) a cost-effective chemical synthesis approach to ZnO nanostructures with great control on the doping properties, targeted towards the realization of single nanowire p-n junction devices, (2) a detailed study of the dynamics and light emitting characteristics of the carriers in these doped ZnO nanostructures using spectroscopic and time-resolved optical techniques, and (3) the application of the knowledge developed in the carrier dynamics and synthesis techniques to design and fabricate LED structures. A successful completion of this research program will develop substantial new knowledge in the light emission mechanisms in ZnO nanostructures, with transformative impact on display and solid-state lighting applications.The broader impacts of this program have technical and educational aspect. Thorough understanding of luminescent properties of nanostructured semiconductors like ZnO will open up new possibilities for photonic devices based on impurity-assisted carrier dynamics. Creation of undergraduate course module that combines the chemical synthesis and photonic device will be a unique attempt at Duke University.

“这项奖励是根据2009年美国复苏和再投资法案（公法111-5）资助的。”本研究的目的是研究化学合成的ZnO纳米线在高性能发光二极管中的潜在应用。该综合研究计划结合材料合成，半导体材料的先进光学表征，以及器件设计和制造能力的专业知识，以发展对ZnO纳米结构发光机制的基本理解，这将应用于实现具有高光效和光通量的发光二极管。这一建议的智力价值源于其强大的跨学科性质。研究活动将包括：(1)一种具有成本效益的化学合成方法来制备ZnO纳米结构，并对掺杂性能进行很大的控制，目标是实现单纳米线p-n结器件；(2)使用光谱和时间分辨光学技术详细研究这些掺杂ZnO纳米结构中载流子的动力学和发光特性。(3)将载流子动力学和合成技术方面的知识应用于设计和制造LED结构。该研究项目的成功完成将为ZnO纳米结构的发光机制提供大量新知识，对显示和固态照明应用产生变革性影响。该计划的更广泛影响有技术和教育方面。深入了解ZnO等纳米结构半导体的发光特性，将为基于杂质辅助载流子动力学的光子器件开辟新的可能性。创建将化学合成与光子器件相结合的本科课程模块将是杜克大学的一次独特尝试。