Colloidal Quantum Dots for Visible-Light Communications (QVLC)

消费电子产品、移动的通信和高级计算技术的发展导致终端用户数据需求的指数级增长。数据流量的快速增长为满足当前光通信行业的容量需求带来了巨大挑战。可见光通信（VLC）系统利用可见光进行数据通信，其占据从380 nm到750 nm的光谱，这被认为是未来数据通信的有前途的技术。溶液处理的量子点发光二极管（QLED）代表了LED的标志性突破，这可以从新推出的QD HDTV中看出。考虑到QLED的巨大潜力，可以合理地假设QLED作为VLC的光源具有相当大的潜力。值得注意的是，QLED联合收割机结合了单片生长的化合物半导体LED（例如氮化铟镓-InGaN、微发光二极管-多发光二极管）的材料特性，以及无与伦比的宽光谱可调谐性、机械可折叠性和低成本可加工性，使它们成为此类应用的有希望的候选者。低成本的可加工性是与传统化合物半导体LED的关键区别，传统化合物半导体LED在大面积高度集成的数据通信系统中部署困难且昂贵。然而，有限的光学带宽和有毒成分（Cd、Pb）已被认为是QLED VLC应用的瓶颈。我们希望与一位热情的博士生合作，深入了解生长无毒量子点（如磷化铟镓（InGaP），硫化铜铟（CuInS 2））以及用于高速QLED光学数据通信的量子点集成薄膜的关键因素。在他们的博士学位结束时，他们应该能够生产高质量的量子点和QLED，并为QLED光通信挑战提供解决方案。开发新材料生长方法和LED器件结构创新来研究这些影响将被鼓励作为学生研究的一部分，并且是高影响力出版物的一个领域。这不仅是一个跨学科项目，而且还旨在促进对量子材料和器件制造的更广泛理解，这适合当前半导体技术的挑战，从便携式电子产品到基于量子材料的量子计算机。学生将获得晶体生长，半导体物理和电子工程经验的基础知识，以及使用洁净室设施，材料模拟和电子显微镜进行溶液处理晶体生长的实践经验。具备这些技能，学生将具有很强的竞争力，并在工业界和学术界都受到追捧。

The evolution of consumer electronics, mobile communications and advanced computing technologies is leading to an exponential increase in end-user data requirements. This rapid growth in data traffic brings a great challenge to fulfil the capacity demands for the current optical communication industry. Visible-light Communication (VLC) systems utilise visible light for data communications that occupy the spectrum from 380 nm to 750 nm, which is considered as a promising technology for future data communication. Solution-processed quantum dot light-emitting diodes (QLEDs) represent a hallmark breakthrough in LEDs, as can be seen from the newly launched QD HDTVs. Given the enormous potential of QLEDs, it would be reasonable to presume that there is considerable potential for QLEDs as a light source for VLC. Remarkably, QLEDs combine the material properties of monolithic grown compound semiconductor LEDs (indium gallium nitride-InGaN, micro-LEDs-muLEDs for example), as well as unrivalled broad spectral tunability, mechanical foldability and low-cost processability, making them a promising candidate for such applications. The low-cost processability is a key differentiator from conventional compound semiconductor LEDs which are difficult and expensive to deploy in large-area highly integrated data communication systems. However, the limited optical bandwidth and toxic composition (Cd, Pb) have been recognised as the bottleneck for QLEDs VLC applications. We would like to work with an enthusiastic PhD student to develop a deep understanding of the factors which are crucial for growing non-toxic QDs (such as indium gallium phosphide (InGaP), copper indium sulphide (CuInS2)) as well as QDs ensemble films for high-speed QLED optical data communications. At the end of their PhD, they should be able to produce high-quality QDs and QLEDs as well as contribute solutions to QLED optical communication challenges. Development of new materials growth method and LED device structural innovations to study these effects will be encouraged as part of the student's research and is an area for high-impact publication. This is not only a transdisciplinary project, but it also intends to foster a broader understanding of quantum materials and device manufacturing, which is fit for current challenges in semiconducting technologies, from portable electronics to quantum computers based on quantum materials. The student will gain fundamental knowledge in nanocrystal growth, semiconductor physics and electronic engineering experience, as well as practical experiences in solution-processed nanocrystal growth, using cleanroom facilities, materials simulations and electron microscopies. Equipped with these skills, the student will be highly competitive and sought after both in industry and academia.