讲座题目：Interface of organic optoelectronics
主讲人：Qilun Zhang 研究员
主持人：保秦烨 教授
开始时间：2024-04-23 11:15
讲座地址：闵行校区物理楼226报告厅
主办单位：物理与电子科学学院
报告人简介：
Dr. Qilun Zhang received his master's degree in microelectronics and solid-state electronics from South China Normal University in 2018. After system training and studying as a Ph.D. student in Surface Physics and Chemistry group, Linköping University (LiU), he obtained his Ph.D. degree. Since 2023, he has been working as the first principal engineer in Laboratory of Organic Electronics (LOE), LiU. His primary research interest lies in the development of organic optoelectronic devices by exploiting surface and interfacial energetic properties, novel design concepts, and forest biomass-based materials.
报告内容：
Herein, a binary cathode interface layer (CIL) strategy based on the industrial solvent fractionated LignoBoost Kraft lignin (KL) is adopted for fabrication of organic solar cells (OSCs).1 Lignin, with its phenolic and aliphatic hydroxyl functionalities acting as chemical handles, has potential as a material for binary systems composites, offering new insight to the interface challenges.2 The uniform-distributed multiple phenol enables KL to easily form bonds with commonly used CIL materials, i.e., bathocuproine (BCP) and PFN-Br, resulting in binary CILs with tunable work function (WF). The binary CILs work well in OSCs with large KL ratio compatibility, exhibiting equivalent or even higher efficiency to the traditional CILs in state of art OSCs.3 In addition, the combination of KL and BCP significantly enhanced OSC stability, owing to KL blocking the reaction between BCP and non-fullerene acceptors (NFAs). The lignin component is expected to act as hole- and exciton blocker, improve interface adhesion and passivate defects, which can be potentially used in perovskite solar cells (PSCs). For instance, the PCBM/BCP bilayer is widely used at the heterointerface of PSCs with inverted architecture, possibly can be further optimized by the incorporation of KL in both sides. This work provides a simple and effective way to achieve highly efficient stable and sustainable OSCs and the potential application in PSCs.
