PFI:AIR - TT: High Efficiency Ultraviolet Light Emitting Diodes Based on Tunneling

PFI:AIR - TT：基于隧道的高效紫外发光二极管

• 批准号: 1640700
• 负责人: Siddharth Rajan
• 金额: $ 20万
• 依托单位: Ohio State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-15 至 2018-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1640700&HistoricalAwards=false
• 关键词: PFI; AIR; TT; Efficiency; Ultraviolet

This AIR Technology Translation project focuses on translating highly efficient ultraviolet light emitters into compact, ultraviolet (UV) light emitting diodes (LEDs). There is a strong market and societal need for efficient UV LEDs for air and water purification, food sterilization, and biomedical and security applications that require compact ultra-violet sources, both in the developed and developing world. These UV LEDs can enable compact, low-cost, and environmentally safe water and air disinfection systems for a variety of applications. This project will result in a prototype of a highly efficient ultraviolet LED with a unique feature, tunneling injected diode structure, that enables significantly higher efficiency, higher power, and lower cost, when compared to leading competitors in this market space. This project addresses the following technology gap(s) as it translates from research discovery toward commercial application. The main challenges to realizing highly efficient tunneling injected ultraviolet light emitters are the low internal quantum efficiency and the low light extraction efficiency. The project will address both of these. Firstly, investigators will study optimization of the light emitters through rigorous experiments studies to improve internal quantum efficiency. Secondly, a careful study of methods to improve the light extraction efficiency will be carried out. In addition, personnel involved in this project, graduate and undergraduate students, will receive innovation and technology translation experiences through their work in developing the high efficiency prototype, and being involved in patenting of intellectual property.

这个AIR技术转换项目的重点是将高效紫外光发射器转换为紧凑型紫外（UV）发光二极管（LED）。无论是在发达国家还是发展中国家，都有强大的市场和社会需求，需要高效的紫外线LED用于空气和水净化、食品灭菌以及需要紧凑型紫外线源的生物医学和安全应用。这些UV LED可以实现紧凑、低成本和环境安全的水和空气消毒系统，用于各种应用。 该项目将产生一种具有独特功能的高效紫外线LED原型，即隧道注入二极管结构，与该市场领域的领先竞争对手相比，该结构可实现更高的效率，更高的功率和更低的成本。 该项目解决了以下技术差距，因为它从研究发现转化为商业应用。实现高效隧穿注入紫外光发射器的主要挑战是低的内量子效率和低的光提取效率。该项目将解决这两个问题。首先，研究人员将通过严格的实验研究来研究光发射器的优化，以提高内部量子效率。其次，将对提高光提取效率的方法进行仔细研究。此外，参与该项目的人员，研究生和本科生，将通过开发高效率原型的工作获得创新和技术翻译经验，并参与知识产权的专利申请。

项目成果

Reflective metal/semiconductor tunnel junctions for hole injection in AlGaN UV LEDs

• DOI: 10.1063/1.4997328
• 发表时间: 2017-05
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: Yuewei Zhang;S. Krishnamoorthy;F. Akyol;Jared M. Johnson;A. Allerman;M. Moseley;A. Armstrong;Jinwoo Hwang;S. Rajan