Fraunhofer Center for Silicon Photovoltaics CSPConference / September 22, 2025 - September 26, 2025
EU PVSEC 2025
42nd European Photovoltaic Solar Energy Conference and Exhibition
European Photovoltaic Solar Energy Conference (EU PVSEC)
Event details
Contact
Location
Bilbao Exhibition Centre, Bilbao, Spain
Date
September 22, 2025 - September 26, 2025
Presentations with participation of Fraunhofer CSP
Oral Presentations/Panel Discussions
Monday, 22. September 2025
Session 1AO.5 – 15:15-16:45 – Si TOPCon Solar Cells and Related Processing Steps
- 1AO.5.2: Comprehensive Investigation of the LECO Process on TOUCAN Solar Cells with N-Type and P-Type TOPCon Layers: LECO Parameter Study, Efficiency Potential and Microstructural Working Model
Authors: Stefan Lange, Sina Swatek, Marko Turek, Stephan Großer, Jan Hoß, Saman Sharbaf Kalaghichi, Jonathan Linke, Jan Lossen, Eve Krassowski
Tuesday, 23. September 2025
Session 3BO.11 – 08:30-10:00 – Imaging Techniques for PV Modules
- 3BO.11.2: Investigating the Correlation between Cracks and the Extracted Performance Parameters in PV Modules
Authors: Ahmad Hashem, Zonghan Jiang, Guido Willers, Leila Mortazavifar, Bengt Jaeckel, Ralph Gottschalg
Session 1BO.2 – 10:30-12:00 – Characterisation and Modelling of Si Solar Cells
- 1BO.2.2: Detecting Local Laser-Doping Variations by Hyperspectral Imaging and Machine Learning Models
Authors: Marko Turek, Stefan Eiternick, Jonathan Linke, Jan Hoß
Panel discussion – 13:30-15:00 – BO.13: Reliability and Bankability in PV
- Moderators:
Dr. Alessandro Virtuani | CSEM
Ms. Ulrike Jahn | Fraunhofer CSP - Ralph Gottschalg, Fraunhofer CSP, als einer der 5 Diskutanten
Wednesday, 24. September 2025
Session 3DO.16 – 08:30–10:00 – Failure Modes and Degradation in PV Modules
Chair: Prof. Ralph Gottschalg, Fraunhofer CSP
- 3DO.16.6: TOPCON PV Modules UV Exposure: Uncovering Hidden Instabilities
Authors: Baloji Adothu, Shahzada Pamir Aly, Bengt Jaeckel, Matthias Pander, Ralph Gottschalg, Vivian Alberts
Session 2CO.2 – 15:15-16:45 – High-Performance and Scalable Perovskite-based Multi-Junction Devices
- 2CO.2.6: Improving the Quality of Perovskite/Charge Transport Layer Interfaces for Highly Efficient Perovskite/Silicon Tandem Solar Cells
Authors: Jann Landgraf, Yashika Gupta, Adi Prasetio, Stefan Lange, Christoph Messmer, Christian Schwarz, Oliver Fischer, Sithisak Chanthalavong, Oussama Er-raji, Maria Camarada , Stefaan de Wolf, Patricia Schulze, Anna Fischer, Stefan Glunz, Juliane Borchert
Session 3CO.10 – 15:15-16:45 – Advanced Interconnection Technology
- 3CO.10.4: Towards Enhanced Reliability of Busbar-Free IBC Solar Cell Interconnections by Non-Conductive Adhesive Reinforcement
Authors: Tudor Timofte, Tobias Messmer, Karl Wienands, Stephan Großer, Giuseppe Galbiati, Tobias Nitsche, Daniel Buckland, Nils Kopp, Andreas Halm
Session 3CO.11 – 17:00–18:30 – Innovative Module Design and Characterisation
- 3CO.11.5 Indoor Characterization and Analysis of Reverse Breakdown Behavior of Solar Cells with Different Cell Architectures
Authors: Bengt Jäckel, Jens Fröbel, Matthias Pander, Andreas Maixner, Pouya Pourshafi, Afshin Bakhtiari, Hamed Hanifi
Thursday, 25. September 2025
Session 3DO.19 – 15:15-16:45 – Mechanical Load Testing and Insights into Glass Breakage
- 3DO.19.4: Determining the Glass Strength of Solar Glass – Test and Evaluation Methods
Authors: Hannah Reichart (University of Applied Sciences Cologne, Cologne, Germany), Matthias Pander (Fraunhofer CSP, Halle, Germany)
Session 3DO.20 – 17:00-18:30 – Performance of Polymeric Materials
Chair: Ms. Ulrike Jahn | Fraunhofer CSP
- 3DO.20.1: Reliable Backsheet / Encapsulant Combinations – Comparative Testing of Mini Modules
Authors: Jonathan Kriening, Roland Einhaus, Maximilian Engel, Bengt Jaeckel, Matthias Pander, Anton Mordvinkin, Ralph Gottschalg, Claudia Buerhop-Lutz, Peter Clawin, Max Köntopp
- 3DO.20.5: Reliability Studies of UV Downshifting Encapsulants after Damp-Heat and UV Weathering
Authors: Jishnu Ramachandran Nair, Marius Lüdemann, Paul-Tiberiu Miclea, Kai Zhang, Kaining Ding, Andreas Lambertz, Ralph Gottschalg1 , Robert Heidrich, Anton Mordvinkin
Friday, 25. September 2025
PLENARY PRESENTATIONS EP.1 – 10:30 - 12:00 – Flexibility and Sustainability
- 5EP.1.3: A Commodity Today, Incompatible Tomorrow: the Paradox of PV?
Authors: Bert Herteleer, Gernot Oreski, Ian Marius Peters, Ulrike Jahn, Ralph Gottschalg, Gabriele Friesen
Visual Presentations
Monday, 22. September 2025
Session 3AV.1 – 13:30-15:00 – PV Module Design and Manufacturing
- 3AV.1.1: Investigating the 3-Dimensional Structure of Metallic Filler Particles in Electrically Conductive Adhesives
Authors: Stephan Großer, Alexander Müller, Robert Göckeritz, Tobias Nitsche, Daniel Buckland, Giuseppe Galbiati
- 3AV.1.6: Investigation on Different Bypass Diodes for Shade Resistant PVModules
Authors: Jens Froebel, Matthias Pander, Bengt Jaeckel, Andreas Maixner, Pouya Pourshafi, Afshin Bakhtiari, Hamed Hanifi
- 3AV.1.15: Curing Conditions Effects on the Volume and Contact Resistivity of Interconnects based on Electrically Conductive Adhesives for PV Modules: Fast versus Slow Curing
Authors: Maria Ignacia Devoto Acevedo, Stephan Großer, Daniel Buckland, Tobias Nitsche, Giuseppe Galbiati, Matthias Helbig, Tobias Meßmer, Andreas Halm, Daniel Tune
- 3AV.1.23: Development, Evaluation and Comparison of Different Innovative Shade-Resistant PV Modules Designs
Authors: Jens Froebel, Sophia Jahreis, Matthias Pander, Bengt Jaeckel, Andreas Maixner, Pouya Pourshafi, Afshin Bakhtiari, Hamed Hanifi
Session 4BV.3 – 13:30-15:00 – Solar Resource and Forecasting
- 4BV.3.25: Evaluating the Suitability of Köppen-Geiger Climate Classifications for Photovoltaic Systems: Micro-climate Analysis and Risk Assessment Maps
Authors: Pavan Kumar Panda, Hugo Sanchez, Leila Mortazavifar, Ralph Gottschalg
Session 3AV.2 – 15:15-16:45 – PV Module Durability and Reliability
- 3AV.2.1: Reliability of Electrically Conductive Adhesive Joints for PERC and HJT-Based Building-Integrated Photovoltaic Facade Elements
Authors: Ringo Koepge, Sophia Jahreis, Nick Schröter, Matthias Pander, Stephan Großer, Bengt Jaeckel
- 3AV.2.26: Non-Destructive and Quantitative Monitoring of Water Ingress in PV Modules by Combination of Karl-Fischer Titration and Near-Infrared Spectroscopy
Authors: Daniel Schüsler, Oleksandr Mashkov, Michael Wendt, Oleksandr Stroyuk, Bengt Jäckel, Ian Marius Peters, Claudia Buerhop-Lutz, Anton Mordvinkin
Session 1CV.2 – 15:15-16:45 – Si Solar Cells | Characterisation & Modelling of Silicon Cells and Their Building Blocks
- 1CV.2.66: Assessment of the Applicability of Non-Contact Quantum Efficiency Measurements to Various Solar Cell Architectures
Authors: Hedayatullah Karimy, Stefan Eiternick, Marko Turek
- 1CV.2.74: Analyzing Reverse I-V Curve Characteristics across Solar Cell Technologies
Authors: Ahmad Hashem, Hugo Sanchez, Leila Mortazavifar, Bengt Jaeckel, Ralph Gottschalg
Session 3AV.3 – 17:00-18:30 – PV Modules Characterisation and Performances Assessment
- 3AV.3.3: Trend of Temperature Coefficients of c-Si Module Technologies from the Past 15 Years
Authors: Bengt Jäckel, Matthias Pander
- 3AV.3.24: Design, Manufacturing and Analysis of Aluminium-backed BIPV Facade Modules: Electrical Performance and Outdoor Tests
Authors: Sophia Jahreis, Bengt Jäckel, Ringo Köpge, Jens Fröbel, Paul Schenk, Matthias Pander
Wednesday, 24. September 2025
Session 4CV.1 – 13:30-15:00 – Advances in Operation, Performance and Maintenance of PV Systems
- 4CV.1.52: Data-Driven Assessment of Inverter Efficiency Losses and Load Profiles in PV Systems
Authors: David Daßler, Stephanie Malik, Dharm Patel, Andreas Dietrich, Jan Spihola, Kai Kaufmann, Carsten Hennig, Robert Klengel, Carola Klute, Ulrike Jahn, Matthias Ebert
Thursday, 25. September 2025
Session 4DV.1 – 08:30-10:00 – Agrivoltaics Approaches, Experiences, Results | Integrated and Innovative PV Applications
- 4DV.1.9: A Microclimate Assessment between Photovoltaics Rows: Opportunities for Biodiversity and Agricultural Integration
Authors: Hugo Sánchez Ortiz, Sebastian Dittmann, Carlos Meza, Ralph Gottschalg
- 4DV.1.75: Sizing Strategy for Green Hydrogen Production: Maximizing PV Utilization and Electrolyzer Efficiency
Authors: Authors: Authors: Carlos Meza, Mohammad Nabipouor, Matthias Ebert
Session 5DV.2 – 10:30-12:00 – Life Cycle Analysis and PV Recycling | Citizens Participation and Awareness
- 5DV.2.59: Women in Photovoltaics: Experiences and Support Mechanisms
Authors: Chiara Busto, Hande Eryõlmaz, Nikoletta Fodor, Ivan Gordon, Pinar Derin Gure, Perine Fleury, Ulrike Jahn, Sebastien Lizin, Delfina Muñoz, Paula Sanchez-Friera, Ioannis (John) Tsanakas, Büşra Yõlmaz
Workshops
Thursday, 25. September 2025
10:30-12:00 | Room 2 | Co-Author: Ulrike Jahn
Fueling PV Innovation: Private R&I and the European Partnership for Innovation in Photovoltaics (EUPI-PV)
The European Partnership for Innovation in Photovoltaics (EUPI-PV) is a key initiative aligning European PV Research & Innovation (R&I) with strategic policy objectives. Officially established with the recent signing of the Memorandum of Understanding, this partnership between the European Commission and the PV scientific community plays a central role in ensuring that research priorities shape Horizon Europe calls, reinforcing Europe’s leadership in photovoltaics. By defining and promoting the Strategic Research and Innovation Agenda (SRIA), it provides a structured framework to advance PV technologies and drive impactful innovation.
13:30-15:00 | Room 2 | Welcome & Introduction: Ulrike Jahn
IEA PVPS Task 13: Reliability and Qualification of Second Life Photovoltaics
Session on the 2nd life of PV modules, where current approaches to repair, testing, and quality control in repurposing photovoltaic technology will be examined. The discussion will begin with a review of existing repair methods, assessing their efficiency and long-term stability. It will then explore best practices and technical challenges related to reliability testing, sorting, and quality/safety control, while also evaluating the cost implications of these processes. This session offers a valuable opportunity for industry professionals, researchers, and policymakers to engage with experts and contribute to the future of sustainable PV module reuse. The objectives of this PVPS Task 13 Workshop are: • Provide a review of technical efforts aimed at repair and refurbishment but also enhanced reparability of PV modules to enable a 2nd life. • Exchange information about re-qualification and bankability of 2nd life PV and summarize field experience of 2nd life PV • Presentation of various business models for establishing reuse of photovoltaic modules.