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.

“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。”该提案的目的是研究化学合成的 ZnO 纳米线在高性能发光二极管应用中的潜在应用。该综合研究计划结合了材料合成方面的专业知识、半导体材料的先进光学表征以及器件设计和制造能力，以发展对 ZnO 纳米结构发光机制的基本了解，这将应用于实现高亮度发光二极管该提案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 ZnO 纳米结构化学合成方法，可很好地控制掺杂特性，旨在实现单纳米线 p-n 结器件，(2) 动力学和发光特性的详细研究使用光谱和时间分辨光学技术分析这些掺杂 ZnO 纳米结构中的载流子，以及 (3) 应用载流子动力学和合成技术中开发的知识来设计和制造 LED 结构。该研究计划的成功完成将在 ZnO 纳米结构的发光机制方面开发大量新知识，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涉及技术和教育方面。对 ZnO 等纳米结构半导体发光特性的透彻理解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独特尝试。