Metal halide perovskites offer broad bandgap tunability and processing versatility, making them compelling building blocks for monolithically stacked multilayer optoelectronics that can surpass the performance and functionality of conventional single-junction devices. By engineering the spectral response across integrated absorber or emitter layers, perovskites unlock a new generation of technologies, ranging from high power conversion efficiency solar cells and high external quantum efficiency light-emitting diodes to broadband color sensors, that share common materials and fabrication challenges yet serve distinct technological purposes.
This symposium brings together researchers working across this broad device landscape, united by the common challenge of understanding and controlling how individual perovskite layers interact within a multilayer architecture. Key themes include the fundamental stability of perovskite compositions across the visible and near infrared bandgaps, novel dry and solution-based thin-film growth methods, device concepts for enhanced light-matter interactions, highly transparent and low-loss interconnecting layers, interface energetics, and degradation pathways in complex heterointerfaces. A dedicated focus will be placed on advanced characterization methods, including sub-cell-selective electrical and optical analysis, ion migration detection, and photoluminescence/electroluminescence imaging, for integrated multilayer devices under different stressing conditions, with the collective aim of establishing design rules for stable, efficient, and scalable perovskite optoelectronics.
- Emerging perovskite compositions for absorbing/emitting light at different bandgaps
- Novel multijunction architectures for photovoltaics, LEDs, and image sensors
- Light management in complex optoelectronic devices
- Transparent contacts and low-loss recombination junctions
- Interfacial recombination, ion migration, and degradation across heterointerfaces
- Electrical and optical simulations for multilayer perovskite devices
- In-situ and spatially-resolved device characterization
- Sub cell-selective performance analysis
I am a Research Associate Professor at Northwestern University. I received my Ph.D. in Materials Science and Engineering from Arizona State University, focusing on understanding defects in 2D materials. Before joining Northwestern, I completed postdoctoral training at the University of Toronto, where I studied perovskites, quantum dots, and their optoelectronic devices. Currently, my research centers on defect passivation and enhancing the stability of interfaces in perovskite solar cells.
I have been recognized as a Highly Cited Researcher in the Cross-Field category by Clarivate and featured in Stanford/Elsevier’s list of top 2% scientists worldwide. As a first or corresponding author, I have published 18 high-impact papers, including Science, Nature, Nature Energy, and Nature Photonics, contributing to a total of over 120 publications. My work has received more than 20,000 citations, with a Google Scholar h-index of 67.
Junke Wang is a professor at South China University of Technology (SCUT), where he leads the newly established LENS Laboratory at the State Key Laboratory of Luminescent Materials and Devices. His research focuses on semiconductor materials and devices for light and energy conversion, with particular interests in perovskite optoelectronics, multijunction photovoltaics, thin-film processing, interface engineering, and device stability.
At SCUT, his group develops new materials, interfaces, fabrication strategies, and device concepts for high-performance multilayer optoelectronics. Current research directions include multijunction photovoltaics, scalable solution- and vacuum-based thin-film processing, and emerging platforms for light and energy conversion.
Laura Herz is a Professor of Physics at the University of Oxford. She received her PhD in Physics from the University of Cambridge in 2002 and was a Research Fellow at St John's College Cambridge from 2001 - 2003 after which she moved to Oxford. Her research interests lie in the area of organic and organic/inorganic hybrid semiconductors including aspects such as self-assembly, nano-scale effects, energy-transfer and light-harvesting for solar energy conversion.
Maksym Kovalenko has been a tenure-track Assistant Professor of Inorganic Chemistry at ETH Zurich since July 2011 and Associate professor from January 2017. His group is also partially hosted by EMPA (Swiss Federal Laboratories for Materials Science and Technology) to support his highly interdisciplinary research program. He completed graduate studies at Johannes Kepler University Linz (Austria, 2004-2007, with Prof. Wolfgang Heiss), followed by postdoctoral training at the University of Chicago (USA, 2008-2011, with Prof. Dmitri Talapin). His present scientific focus is on the development of new synthesis methods for inorganic nanomaterials, their surface chemistry engineering, and assembly into macroscopically large solids. His ultimate, practical goal is to provide novel inorganic materials for optoelectronics, rechargeable Li-ion batteries, post-Li-battery materials, and catalysis. He is the recipient of an ERC Consolidator Grant 2018, ERC Starting Grant 2012, Ruzicka Preis 2013 and Werner Prize 2016. He is also a Highly Cited Researcher 2018 (by Clarivate Analytics).
Yen-Hung LinJosephine SurelMathias Uller RothmannObtained PhD degree from National Academy of Sciences of Ukraine in 2007. 2008 - 2013 years Sergii is a PostDoc in JKU Linz, Austria in Prof. Wolfgang Heiss group. In 2013 he joined the group of Prof. Maksym Kovalenko group in ETH Zurich, Switzerland where he is a Senior Research Associate (Oberassistent) since 2018.
The main achievements are for the discovering of perovskite hard radiation and full-colour photo-detectors, optical gain and lasing in perovskite nanocrystal films.