邓云洲

邓云洲

剑桥大学 卡文迪许实验室，玛丽·居里学者

Cavendish Laboratory, University of Cambridge，

Marie Skłodowska-Curie Fellow

邓云洲博士是英国剑桥大学卡文迪许实验室玛丽·居里学者。他于 2016 年和2021年在浙江大学分别获得学士学位和博士学位。他在2023年加入剑桥大学卡文迪许实验室担任研究助理，随后获授玛丽·居里学者项目资助从事光电器件的先进光谱技术研究。邓博士的研究方向聚焦于胶体纳米晶光电器件及电激发下的载流子动力学过程。他以第一作者或通讯（含共同）作者身份在 Nature、Nature Photonics、Nature Electronics、Nature Communications、Science Advances 和 Advanced Materials 等期刊发表多篇研究论文。

Dr. Yunzhou Deng is a Marie Skłodowska-Curie Fellow at the Cavendish Laboratory, University of Cambridge. He received his BSc in 2016 and PhD in 2021 from Zhejiang University. He joined the Cavendish Laboratory as a Research Associate in 2023 and was subsequently awarded a Marie Skłodowska-Curie Fellowship working on advanced optical spectroscopy of optoelectronic devices. Dr. Deng’s research focuses on optoelectronic devices of colloidal nanocrystals and the fundamental charge dynamics under electrical excitations. He has published as (co-)first or (co-)corresponding author in journals including Nature, Nature Photonics, Nature Electronics, Nature Communications, Science Advances, and Advanced Materials.

题目

胶体纳米晶的电激发动力学

摘要：

通过电输入来激发胶体纳米晶，可在溶液加工型电致发光器件中实现明亮且光谱窄带的发射，在显示、照明以及通信技术中展现出重要应用潜力。理解电激发过程，即载流子向激发态的转化机制，对于提升器件性能并拓展器件功能具有基础性意义。在本报告中，我将介绍近期关于量子点发光二极管 (QLED)中载流子动力学的研究工作，以及其在决定电激发产率、器件稳定性和开关速度方面的作用。通过在工作条件下开展多种光谱表征手段，我们揭示了杂化器件中有机–无机界面对电激发过程的关键影响。这些机理认识为QLED器件结构设计提供了全新且普适的指导原则，最终显著提升了QLED的电光转换效率、工作寿命和调制频率，推动其在下一代光电技术例如溶液加工有源矩阵显示和可见光通信的发展。

Title

High-definition & deformable quantum dot light-emitting diodes via transfer printing

Abstract：

Excitation of quantum dots via electical input offer access to their bright and spectrally sharp emission in solution-processed electroluminescent devices, which show strong potential for displays, lighting and communication technologies. Understanding the electro-excitation process, i.e., the converstion of charge carriers into excited states, is of fundamental importance for advancing the device performancance and expanding device functionality. In this talk, I will present recent studies on charge dynamics of quantum-dot LED, and their roles in determining the yield, stability, and switching speed of electro-excitations. We highlight the critical influence of organic–inorganic interfaces in hybrid devices, as revealed by a variety of spectroscopic probes under operational conditions. The mechanistic insights provide new and generalisable guidance for device design, which significantly boosts the efficiency, operational lifetime, and modulation frequency of quantum-dot LEDs towards next-generation technologies such as solution-processed active-matrix display and visible-light communications.