报告题目：Long-term stable and highly efficient and printed multi-junction solar cell

报 告 人：Christoph J. Brabec教授 （埃尔朗根-纽伦堡大学）

邀 请 人：李宁 教授

报告时间：2025年4月7日下午2:30-4:00

报告地点：北区科技园1号楼发光国重N308报告厅

报告摘要：

Perovskite-organic tandem solar cells(P-0 TSCs) are developing rapidly, igniting tremendous interest in the multijunction community. However, their efficiency still lags behind that of other counterparts, and their current operational stability remains underexplored. This presentation will give a brief introduction into organic based multijunction solar cells and then turn over to hybrid multijunction devices. Two key aspect will be addressed specifically. First, we demonstrate a simplified interconnection layer (lCL) without an additional charge recombination layer (CRL), achieving an average efficiency of 25.12% (with a champion device reaching 25.53%) for P-0 TSCs. Second, we present a detailed investigation to uncover how the single-junction sub-cells of multi-junction cells mutually stabilize each other, which leads to excellent long-term lifespan of P-0 TSCs, retaining over 91% of their initial performance after 1000 hours of continuous metal-halide lamp illumination without UV filters. Besides, we also highlight the durability of lCLs, providing insights for advancing future tandem configurations.

个人简介：

Christoph J. Brabec received his PhD (1995) in Physical Chemistry from Linz  University, Austria and joined the group of Alan Heeger at UC Santa Barbara (USA)  for a sabbatical. He joined the SIEMENS research labs (project leader) in 2001,  Konarka in 2004 (CTO), Erlangen University (FAU - Professor for Material Science) in  2009, ZAE Bayern e.V. (scientific director and board member) in 2010, spokesmen of  the Interdisciplinary Center for Nanostructured Films (IZNF) in 2013 and became  director at FZ Jülich (IEK-11) in 2018. From 2018-2023 he was appointed as Honorary  Professor at the University of Groningen, Netherlands. He is a Fellow of the Royal  Society of Chemistry and has been elected to become a full member to the Bavarian  

Academy of Science.  His research interests include all aspects of solution processing organic, hybrid and  

inorganics semiconductor devices with a strong focus on photovoltaics and renewable  energy systems. A major research interest are scalable processing technologies  allowing to control microstructure formation in disordered semiconductors. A very  recent activity explores the limitation of autonomous operating research line for  accelerating innovation and inventions in materials science. His combined scientific  and technological interests supported the spin-out of several companies. He published  over 1000 articles, thereof over 800 peer reviewed articles, about 100 patents, several  books and book chapters and overall received more than 100.000 citations. His hindex is over 150 and Thompson Reuters HRC lists him for the last years consecutively  as a highly cited researcher.