BRIGE:Triple-Wavelength White Light Emitters using Nitride/Oxide Heterostructure

0824311Gon Namkoong，旧道明大学BRIGE：使用氮化物/氧化物异质结构的三波长白光发射器智力优点：这项研究的目标是开发具有高光输出功率、出色的散热能力、超亮度和长寿命的白光发光二极管。新颖的概念是集成光学上有前途的半导体材料、III族氮化物和ZnO。所提出的方法是：（1）将氮化物/ZnO异质结构的非常有效的光学特性功能化以发射三色，包括蓝色、绿色和红色发射； (2)利用纳米结构ZnO增强外部光提取； (3)采用高导电n型ZnO衬底进行垂直设计，允许高注入电流在更大的芯片尺寸下实现超亮度发射。拟议的研究将开发具有 III 族氮化物和 ZnO 的集成器件，以创造新水平的高效白光 LED。该研究涉及先进的生长技术，包括异质界面层、缺陷的动态控制、p型GaN空穴浓度的增强以及纳米结构ZnO发光效率的研究。预期的推动力是新型白光发射器，它有望提供非常便宜、可靠且高效的 LED。更广泛的影响：成功的设备将通过取代当前基于荧光灯的普通照明光源来产生巨大的节能来源。这项研究需要了解 ZnO 和 III 族氮化物异质结系统的深入表征。因此，该研究项目为本科生和研究生提供了积极参与工程界的材料表征、生长、器件模拟和科学活动的机会。此外，少数民族和妇女的教育战略将通过本科生“高级研究项目”稳步实施，由包括少数民族和女学生在内的多元化高级学生组成的小组将接触有趣的研究领域。首席研究员将以“导师和顾问”的身份参与该项目，并提高他们对科学和工程主题的兴趣，让他们在继续学术领域或工业工程和科学领域继续他们的职业生涯

0824311Gon Namkoong, Old Dominion UniversityBRIGE: Triple-Wavelength White Light Emitters using Nitride/Oxide HeterostructureIntellectual Merit: The objective of this research is to develop white light emitting diodes for high light output power, excellent heat dissipation capabilities, super-brightness and long lifespan. Novel concepts are to integrate optically promising semiconductor materials, III-nitrides and ZnO. The proposed approaches are: (1) to functionalize the very effective optical properties of nitride/ZnO heterostructure to emit triple colors, including blue, green, and red emissions; (2) to use nanostructured ZnO for enhanced external light extraction; (3) to use highly conductive n-type ZnO substrates for vertical design which allows for the high injection currents for super-brightness emission at larger chip sizes. The proposed research will develop the integrated devices with III-nitrides and ZnO to create new level of high efficiency white LEDs. This research involves the advanced growth technologies, including dynamic control of hetero-interface layer, defects, enhanced hole concentrations of p-type GaN, and the investigation of luminescence efficiency of nanostructured ZnO. The expected thrusts are the novel white emitters which promise very cheap, reliable, and high efficiency LEDs. Broader Impacts: The successful devices will produce huge energy-saving sources by replacing current fluorescent-based general lighting sources. This research requires the understanding of intensive characterizations of heterojunction system of ZnO and III-nitrides. Thus, the research program provides an opportunity for undergraduate and graduate students actively to involve material characterization, growth, device simulation, and scientific activities in the engineering communities. Furthermore, the educational strategies for minorities and women will be steadily conducted through undergraduate "senior research projects" where a small group composed of diverse senior students, including minorities and female students, will be exposed to interesting research fields. The principal investigator will participate in this project as "Mentor and Advisor" and will raise their interest in scientific and engineering topics and let them continue their careers in continued academic fields or in the industrial engineering and scientific fields