Tunable, full color tunnel junction nanowire light emitting diodes for smart lighting and display applications

用于智能照明和显示应用的可调谐全彩隧道结纳米线发光二极管

• 批准号: 463272-2014
• 负责人: Mi, Zetian
• 金额: $ 12.35万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=558332
• 关键词: Tunable; full; color; tunnel; junction

This project is related to the development of ultrahigh efficiency full color light emitting diodes (LEDs) on low cost, large area substrates for applications in the emerging solid state lighting, full-color displays, and consumer electronics. Today, the global LED market has already reached over 15 billion USD, with an annual growth rate of more than 20%. However, making efficient full color LEDs still represents one of the biggest challenges we face. The external quantum efficiency of current organic LEDs (OLEDs) or GaN-based inorganic LEDs is generally in the range of 20-30%, or less. In this project, we propose to develop InGaN/GaN/AlGaN dot-in-a-wire core-shell LEDs on highly reflective Ag layers on Si, which can lead to an extremely large external quantum efficiency (>60%) and can therefore break the efficiency bottleneck of conventional LED devices. With the use of tunnel junction and selective area growth, we will further demonstrate full color, tunable nanowire LED arrays with extremely low heat generation and negligible efficiency droop for the emerging smart lighting and micro-scale full color displays. Such cascaded tunnel junction LEDs can operate under a large voltage range (~ 3 to 100 V) without the use of any transformers, thereby leading to significantly reduced cost. This project also involves close collaboration with Future Lighting Solutions - one of the world's largest providers of LED lighting components, and Tran Tek, a start-up in the business of LEDs and displays. This project will enable the effective training of at least 3 PhD students, 1 postdoc, and more than 12 undergraduate students in manufacturing, nanomaterials, solid state lighting and displays. We strongly believe it is of imminent interest in launching such a multidisciplinary project, which is poised to provide a paradigm shift in the rapidly evolving lighting, display and consumer electronics industries in Canada.

该项目与低成本的超高效率全彩色发光二极管（LED）的发展有关，用于新兴固态照明，全彩色显示和消费电子产品的大面积基板。如今，全球LED市场已经达到超过150亿美元，年增长率超过20％。但是，使高效的全彩LED仍然代表着我们面临的最大挑战之一。当前有机LED（OLED）或基于GAN的无机LED的外部量子效率通常在20-30％或更小的范围内。在这个项目中，我们建议在SI上开发Ingan/Gan/Algan点线核心壳LED，这可能会导致极大的外部量子效率（> 60％），因此可以破坏常规LED设备的效率瓶颈。随着隧道结和选择性区域的增长，我们将进一步展示全彩色，可调的纳米线LED阵列具有极低的热量产生，并且可忽略不计的效率下垂，用于新兴的智能照明和微尺度的全颜色显示器。这种级联的隧道连接LED可以在大型电压范围（〜3至100 V）下运行，而无需使用任何变压器，从而大大降低了成本。该项目还涉及与未来照明解决方案的密切合作，这是世界上最大的LED照明组件提供商之一，而Tran Tek是LED和展示业务的初创公司。该项目将使至少3名博士学位学生，1名博士后以及12位以上的制造业，纳米材料，固态照明和展示的有效培训。我们坚信，这是在发起这样一个多学科项目的迫在眉睫的兴趣，该项目有望在加拿大加拿大迅速发展的照明，展示和消费电子行业进行范式转变。