报告题目：Strategies to demonstrate circularly polarized light emitting diodes and detectors

报  告 人：Young-Hoon Kim(金榮訓) 副教授，汉阳大学

研究方向：新型纳米材料

报告时间：2026年4月20日(星期一)下午14:30

报告地点：量子楼410报告厅

报告简介：

Circularly polarized light (CPL) has attracted significant attention due to its potential applications in information storage and processing, quantum communication, asymmetric catalysis, 3D displays, bioencoding, and optoelectronic devices. However, achieving strong and controllable CPL emission and detection in device platforms remains a critical challenge. Here, we present a series of strategies to realize efficient CPL emission and detection in optoelectronic devices. First, we demonstrate electrically driven CPL by injecting spin-polarized charge carriers into nanocrystal (NC) layers, resulting in circularly polarized electroluminescence in light-emitting diodes. In addition, we introduce chiral moieties onto nanocrystal surfaces or surrounding media to induce self-assembled chiral superstructures, thereby enhancing chiroptical interactions and enabling efficient CPL emission. Beyond light-emitting devices, we further demonstrate CPL photodetectors by incorporating chiral ligands into metal halide light-absorbing materials, allowing selective detection of CPL. These approaches provide versatile design strategies for controlling chirality in optoelectronic systems and offer new opportunities for the development of next-generation chiral optoelectronic devices.

报告人简介：

Prof. Young-Hoon Kim(金榮訓)，汉阳大学，副教授。2016年博士毕业于韩国浦项科技大学（POSTECH），师从Tae-Woo Lee院士。先后于首尔国立大学（SNU）和美国国家可再生能源实验室（NREL）从事博士后研究，合作导师为J. M. Luther和M. C. Beard两位资深研究员，期间曾访问西班牙瓦伦西亚大学，合作导师为H. Bolink教授。2021年8月入职汉阳大学（Hanyang University)能源工程系。

Kim教授一直以来致力于发现和设计具有可控光学、电子和自旋特性的新型纳米材料，并深入理解各种材料中电荷-光子-自旋相互作用的基本过程，研究领域涵盖有机-无机混合材料（如金属卤化物钙钛矿）、有机/聚合物材料和无机纳米材料（如碳纳米点/石墨烯量子点），已发表SCI论文100余篇，其中第一和通讯作者论文42篇，发表在Science、Nature Photonics、Nature Nanotechnology等高水平学术期刊上。论文被引用15000余次，h指数为47，获批发明专利53项，其中国内专利40项，国际专利13项。