ABOUT
Advanced semiconductor technology is central to meeting several of our most urgent environmental and societal challenges. As demand for improved materials and novel device concepts grows, advanced characterization becomes ever more critical, and X-ray and neutron-based techniques offer unique and powerful tools for understanding the physical and chemical properties that underpin semiconductor performance.
With this Theme, we aim to strengthen collaboration between experts in synchrotron- and neutron-based characterization and semiconductor device development, spanning academia and industry across Sweden and Europe. Our goals are to advance semiconductor functionality through fundamental materials research, to pioneer new synchrotron-based approaches to semiconductor characterization, and to train the next generation of researchers in combining device development with advanced X-ray and neutron techniques.
Across all of these aims, we are committed to building lasting structures and partnerships whose impact extends well beyond the duration of this Theme.
HAPPENING IN THEME
CORE GROUP
Semiconductors Co-leader WG 1 (Advanced Transistor Technology), LINXS Fellow
Prof. Lars-Erik Wernersson, Lund University, Lund, Sweden
Lars-Erik Wernersson is Professor at Lund University since 2005 researching Nanoelectronics with ICT applications. The research targets improved device performance using sophisticated processing and characterization, including integration of new advanced materials. A particular focus is on the III-V platform. He has been coordinating cross-disciplinary research programs combining electrical and structural characterization and is very active in European efforts as well as in national and international industry collaborations.
Semiconductors Co-leader WG 1 (Advanced Transistor Technology), LINXS Fellow
Assoc. Prof. Claudia Fleischmann, IMEC and KU Leuven
Claudia Fleischmann is a principal member of technical staff and team leader at imec, and an associate professor at the KU Leuven. She has over 15 years’ experience in the field of materials characterization for semiconductor applications and is responsible in defining the characterization roadmap within imec. Her research primarily focuses on advanced and emerging measurement concepts, including synchrotron-based analysis, with the aim to provide characterization strategies that serve current and future needs in the semiconductor industry.
Semiconductors Co-leader WG 2 (Power Electronics), LINXS Fellow
Prof. Vanya Darakchieva, Lund University, Lund, Sweden
Vanya Darakchieva is Professor in Materials Science and a Wallenberg Scholar at Solid State Physics, Lund University, and part-time Professor in Semiconductor Materials at Linköping University. Her background is in semiconductor physics with focus on development of (ultra)wide bandgap semiconductors for high-frequency and power electronics. She is also developing spectroscopic techniques and analytical methods for studying electronic transport materials from bulk to nanoscale. Vanya is the director of VINNOVA Competence center for III-Nitride technology - C3NiT-Janzén and the Terahertz Materials Analysis Center.
Semiconductors Co-leader WG 2 (Power Electronics), LINXS Fellow
Dr. habil. Joël Eymery, CEA and Grenoble Alpes University
Joël Eymery holds a distinguished background in engineering and advanced materials. Since joining the CEA (Fundamental Research Division in Grenoble), his work primarily utilizes Metal-Organic Chemical Vapor Deposition (MOCVD) to grow nitrides, with a keen focus on investigating novel optical properties and piezoelectric phenomena. He is also engaged in the realization of cutting-edge nano-device demonstrators, particularly exploring applications on light emission and flexible substrates. In addition to his research, Dr. Eymery plays a principal role in the scientific and operational management of French synchrotron radiation facilities and the associated characterization platforms at CEA. He is actively involved in French priority research programs aimed at advancing innovative materials through the integration of artificial intelligence. He is also promoting in his laboratory an active collaboration with some industrial partners.
Semiconductors Co-leader WG 3 (Neuromorphic Materials for Deep Learning and AI), LINXS Fellow
Assoc. Prof. Mattias Borg, Lund University, Lund, Sweden
Mattias Borg is Associate Professor in Nanoelectronics at Lund University, with previous research positions within the semiconductor industry, including IBM and Ericsson. His research focuses on the materials and device aspects of neuromorphic technology, including their integration into larger systems. His group is extensively relying on synchrotron x-ray techniques to understand material and device behavior. His network includes both Swedish and European academic and industrial stakeholders within neuromorphic technology.
Semiconductors Co-leader WG 3 (Neuromorphic Materials for Deep Learning and AI), LINXS Fellow
Prof. Regina Dittmann, Forschungszentrum Jülich and RWTH Aachen
Prof. Dr. Regina Dittmann is director of the Institute of Electronic Materials (PGI-7) at the Research Centre Jülich (Germany). Since November 2012, she is also a professor at RWTH Aachen University. Regina Dittmann is working on the atomically controlled growth of oxides, memristive devices and neuromorphic circuits and she is operating the electronic oxides cluster laboratory (EOC). She is an internationally recognized expert on memristive devices, in particular on the elucidation of their working and failure mechanisms by spectroscopic analysis. Prof. Dittmann knows LINXS from her Guest Researcher visit in 2021 as part of the “New Materials” Theme, while the current Theme application matches even better with her research focus, reflected by her role as WG co-leader.
Semiconductors Co-leader WG 4 (Optoelectronics and Photovoltaics) , LINXS Fellow
Prof. Jesper Wallentin, Lund University, Lund, Sweden
Jesper Wallentin is Professor in X-ray physics, with a PhD in Solid State Physics. His research concerns the intersection of nanoscience and X-ray science. He uses X-rays to investigate nanostructured devices and develops nanostructures as X-ray detectors. In particular, he has worked on high spatial resolution X-ray methods. Prof. Wallentin is LINXS fellow as he contributed with his expertise within X-ray imaging as WG member in the Integrative Pharmacology and Drug Discovery Theme.
Semiconductors Co-leader WG 4 (Optoelectronics and Photovoltaics), LINXS Fellow
Prof. Eva Unger, Helmholtz-Zentrum Berlin (HZB) and Humboldt University
Eva Unger is head of the Department for Solution Processing of Hybrid Materials and Devices at Helmholtz-Zentrum Berlin and Professor at the Humboldt University, Berlin.
She is a pioneer and internationally recognized expert in Perovskite Solar Cell devices, where her activities include both manufacturing and synchrotron-based characterization, with strong involvement on method development at MAX IV (mainly Balder beamline). Furthermore, Prof. Unger wants to contribute to an enhanced collaboration between MAX IV and HZB.
WORKING GROUPS FOR SEMICONDUCTORS
WorkING Group 1
advanced transistor technology
Advanced transistor technologies integrate materials covering almost the full periodic table, and interface properties largely determine device performance. Building on Lund's long tradition of investigating III-V MOS gate-stacks, this group will expand to alternative channel materials such as conducting oxides, 2D materials, and wide bandgap materials. In collaboration with international and industrial partners, the main focus will be on the chemical properties at interfaces, their stability, and reactions upon switching, essential knowledge for the development of future device technologies.
WORKING GROUP 2
power electronics
Working group 2 focuses on improving the reliability and performance of power electronics based on wide and ultra-wide bandgap semiconductors such as AlGaN, AlN, and Ga2O3, which are key materials for the future smart energy grid and electrification of transportation. Using synchrotron X-ray and neutron techniques, the group will investigate interface properties, defects, stress distribution, doping, and thermal management under realistic operational conditions.
WORKING GROUP 3
neuromorphic materials for deep learning and ai
Working group 3 focuses on understanding the materials that enable neuromorphic computing, hardware that emulates the behavior of biological neural systems. Using synchrotron X-ray techniques, including operando studies during device operation, the group will investigate the structural and chemical dynamics of memristor materials such as ferroelectric, ferromagnetic, and phase change materials, with the aim of improving device reliability and reducing variation at the nanoscale.
WORKING GROUP 4
optoelectronics and photovoltaics
Working Group 4 focuses on optoelectronic devices and solar cells, areas where Sweden has a long tradition of strong research and where improved performance and lower costs are of vital interest. Leveraging the unique capabilities of synchrotron X-rays, including high spatial resolution and long absorption lengths, the group will study single devices and grains, and perform operando and in situ studies during processing steps such as crystal growth. A particular focus will be on developing practical solutions for such studies, including sample preparation and the simultaneous probing of light excitation and emission alongside the X-ray measurements.
Semiconductors Core Group leader and member of WG3 (Neuromorphic Materials for Deep Learning and AI), LINXS Fellow
Department of Physics, Lund University, Sweden
Rainer Timm is Professor in Physics at Lund University. He is head of the Division of Synchrotron Radiation Research at Lund University and Coordinator of the Lund Nano Characterization Labs. His research focuses on characterization of semiconductor surfaces, nanostructures, and devices. He uses and develops various synchrotronbased spectroscopy methods, often under operando conditions or while pushing the limits of spatial and temporal resolution. For this, he is a frequent user (with about five to ten beamtimes per year) at several MAX IV beamlines and other European synchrotron facilities.