Monolithic on-chip integration of microscale laser diodes (uLDs) and electronics for micro-displays and visible light communications

用于微型显示器和可见光通信的微型激光二极管 (uLD) 和电子器件的单片片上集成

• 批准号: EP/W003244/1
• 负责人: Tao Wang
• 金额: $ 193.5万
• 依托单位: University of Sheffield
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FW003244%2F1
• 关键词: Monolithic; chip; integration; microscale; laser

Micro-displays with compact screens of <= 1/4 inch diagonal length have wide ranging applications in smart watches, smart phones, augmented reality & virtual reality (AR & VR) devices, Helmet Mounted Displays (HMD), and Head-Up Displays (HUD). Their individual pixel elements typically consist of a large number of microscale visible emitters (which are currently microLEDs). The global micro-display market has been predicted to reach $4.2 billion by 2025 at a Compound Annual Growth Rate (CAGR) of 100%. However, the significantly increasing demands on microdisplays are pushing the requirements for ultra-high resolution and ultra-high efficiency. Current microdisplays are far from satisfactory, as a number of fundamental challenges cannot be met by any existing technologies. Therefore, a disruptive technology needs to be developed. Visible light communication (VLC) is an emerging technology, in principle offering approximately 300 THz of license free bandwidth that is four orders of magnitude larger than that available in current RF based Wi-Fi or 5G. Considering the highly congested nature of current RF based Wi-Fi, it is expected that VLC would be the leading candidate to offer a complementary solution. Unfortunately, the current approach to the fabrication of VLC is substantially limited to visible LED technologies with conventional electrical driving methods. This approach suffers from a number of insurmountable barriers. Therefore, the performance of current VLC is far below requirements. Global Market Insights has forecasted that the VLC market will exceed $8 billion by 2030. We propose a Centre-to-Centre consortium consisting of ten leading academics from three universities in the UK (Sheffield; Strathclyde; Bath) and two universities in USA (Harvard; Massachusetts Institute of Technology) to develop a novel integration technology in order to achieve the ultimate micro-display systems and the ultimate visible light communication systems. Unlike any existing photonics & electronics fabrication approaches, we propose a completely different approach to monolithically integrate microscale laser diodes (uLDs) and high electron mobility transistors (HEMTs) on a single chip, where each uLD is electrically driven by individual HEMTs. This will allow us to achieve devices/systems which are impossible to obtain by any existing approaches.

对角线长度 <= 1/4 英寸的紧凑型屏幕微型显示器在智能手表、智能手机、增强现实和虚拟现实 (AR & VR) 设备、头盔显示器 (HMD) 和平视显示器中具有广泛的应用（平视显示器）。它们的各个像素元件通常由大量微型可见光发射器（目前为 microLED）组成。预计到 2025 年，全球微显示器市场将达到 42 亿美元，复合年增长率 (CAGR) 为 100%。然而，对微显示器需求的显着增长正在推动对超​​高分辨率和超高效率的要求。当前的微显示器远不能令人满意，因为任何现有技术都无法应对许多基本挑战。因此，需要开发一种颠覆性的技术。可见光通信 (VLC) 是一项新兴技术，原则上可提供约 300 THz 的免许可带宽，比当前基于 RF 的 Wi-Fi 或 5G 中可用的带宽大四个数量级。考虑到当前基于 RF 的 Wi-Fi 的高度拥塞性质，预计 VLC 将成为提供补充解决方案的主要候选者。不幸的是，目前的 VLC 制造方法基本上仅限于采用传统电驱动方法的可见光 LED 技术。这种方法存在许多难以克服的障碍。因此，目前VLC的性能远远达不到要求。 Global Market Insights 预测，到 2030 年，VLC 市场将超过 80 亿美元。我们提议成立一个中心到中心联盟，由来自英国三所大学（谢菲尔德、斯特拉斯克莱德、巴斯）和美国两所大学（哈佛大学）的 10 名顶尖学者组成；麻省理工学院）开发出新颖的集成技术，以实现终极的微型显示系统和终极的可见光通信系统。与任何现有的光子学和电子学制造方法不同，我们提出了一种完全不同的方法，将微型激光二极管 (uLD) 和高电子迁移率晶体管 (HEMT) 单片集成在单个芯片上，其中每个 uLD 由单独的 HEMT 电驱动。这将使我们能够实现任何现有方法无法获得的设备/系统。

项目成果

Optical characterisation of InGaN-based microdisk arrays with nanoporous GaN/GaN DBRs

• DOI: 10.1088/1361-6463/ac8fa0
• 发表时间: 2022-09
• 期刊: Journal of Physics D: Applied Physics
• 作者: P. Fletcher;Guillem Martinez de Arriba;Ye Tian;N. Poyiatzis;C. Zhu;P. Feng;J. Bai;Tao Wang

A comparison study of InGaN/GaN multiple quantum wells grown on (111) silicon and (0001) sapphire substrates under identical conditions

相同条件下在(111)硅和(0001)蓝宝石衬底上生长的InGaN/GaN多量子阱的对比研究

• DOI: 10.1088/1361-6463/ac8da4
• 发表时间: 2022
• 期刊: Applied Physics
• 作者: Zhu C