Nanostructure Visible Light Emitting Diodes

纳米结构可见光发光二极管

• 批准号: 0901867
• 负责人: Paul Dapkus
• 金额: $ 30.35万
• 依托单位: University of Southern California
• 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 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0901867&HistoricalAwards=false
• 关键词: Nanostructure; Visible; Light; Emitting; Diodes

"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."The objective of the research will be to advance the science and technology of visible LEDs fabricated from columnar nanostructures that emit at visible wavelengths and with high efficiencies.Intellectual Merit of the ProgramA program of research is proposed to explore nanostructure visible light emitting diodes (LEDs). The objective of the research will be to advance the science and technology of visible LEDs fabricated from columnar nanostructures that emit at visible wavelengths and with high efficiencies. Single and multiple wavelength emission nanowire LEDs in the InGaN materials system will be investigated for eventual fabrication on low cost substrates. Modeling of the physical structures involving new heterojunction designs enabled by the nanoscale columnar geometry will be undertaken. Reduced strain and use of non-polar and semi-polar facets in such structures will improve efficiency compared to planar designs. Understanding carrier transport and recombination in the nanowires and mitigation of processes that limit the efficiency of nanowires are the goals. Nanopatterning will be used to control the emission wavelength through control of physical dimensions and material compositions. Broader Impact of the ProgramTo the extent possible, the program will be carried out by under-represented minorities. Graduate students and two undergraduate assistants from the USC Merit research program will learn the inherent interdisciplinary nature of device research. The Center for Energy Nanoscience and Technology for which the PI is Director will be exploited to induce interest in LEDs and in energy conservation among young students (K - 12) and teachers. The results will be included in two courses on photonics at USC.

“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。他说：“研究的目的是推动以柱状纳米结构制造的可见光发光二极管的科学和技术，使其在可见光波长下发出高效率的光。计划的知识价值研究计划旨在探索纳米结构可见光发光二极管。该研究的目标是推进由柱状纳米结构制造的可见光LED的科学和技术，这些纳米结构在可见光波长下发射高效率。InGaN材料系统中的单波长和多波长发射纳米线LED将被研究，以最终在低成本衬底上制造。涉及新的异质结设计，使纳米级柱状几何形状的物理结构的建模将进行。与平面设计相比，此类结构中减少的应变以及非极性和半极性刻面的使用将提高效率。我们的目标是了解纳米线中的载流子输运和复合，以及减轻限制纳米线效率的过程。纳米图案化将用于通过控制物理尺寸和材料成分来控制发射波长。 方案的更广泛影响方案将尽可能由代表性不足的少数群体执行。研究生和两名来自USC Merit研究项目的本科生助理将学习设备研究的固有跨学科性质。PI担任主任的能源纳米科学与技术中心将被利用，以引起年轻学生（K - 12）和教师对LED和节能的兴趣。结果将包含在南加州大学的两门光子学课程中。