April 15-17, 2024

Freiburg, Germany

April 15-17, 2024

Freiburg, Germany

April 15-17, 2024

Freiburg, Germany


Elevate your understanding of perovskite photovoltaics at our Free Spring School—a collaborative effort by DIAMOND and TESTARE HORIZON projects. Tailored for PhD students and early-stage researchers, this unique opportunity fosters an environment where expertise meets enthusiasm. Join us at the PhD School on Perovskite PV for exploration, learning, and networking. Be part of a transformative experience that goes beyond traditional learning, contributing to the rapid advancement of this dynamic field. Secure your spot and embark on a journey into the future of solar energy. This is a complimentary event, covering all expenses for lunch and social activities. Your only financial commitment will be towards your travel and accommodation.

Intensifying Photovoltaic Research

In-depth Lectures

Gather valuable insights from the lecturers and speakers specialized in the DIAMOND and TESTARE project consortia providing in-depth lectures.

Industry Practices

Learn about the industrialization of perovskite PV at our event. An opportunity to gain an understanding about the technologies at the helm of industry developments.

Interactive Environment

Participate in complimentary social activities, including a city and tour bar, a Black Forest excursion, and the PhD School Dinner —ideal for sparking new research ideas.


  1. Carbon-based electrodes
  2. Simulation and characterization of perovskite PV
  3. Life-cycle assessment and environmental fate
  4. Perovskite-based tandem photovoltaics
  5. Industrialization of perovskite PV
  6. Stability assessment and outdoor reliability

Featured Talks & Speakers

Uncover cutting-edge insights at our PhD School, bridging minds in perovskite photovoltaics. Engage with invited experts and DIAMOND/TESTARE speakers, fostering innovation through shared knowledge. Elevate your research journey—join us!

Maria Hadjipanayi | University of Cyprus

“Outdoor Reliability and Degradation of Perovskite Photovoltaics”

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Dr. Hadjipanayi is a research scientist at the PV Technology Laboratory of the University of Cyprus (UCY). Her research interests and background lie at the interface between fundamental material science and device characterization for novel applications. She is leading the strategic infrastructure unit ‘DegradationLab’ of UCY which focuses on the testing of new / emerging solar cell technologies and is the Coordinator of the European twinning project TESTARE (testare.eu).

Fan Fu | Empa

“All-Perovskite Tandem Photovoltaics”

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Dr. Fan Fu is a group leader at Empa-Swiss Federal Laboratories for Materials Science and Technology. He earned his Ph.D. degree from ETH Zürich with an ETH Medal. From January 2018 to May 2019, he worked as a postdoc researcher in Prof. Christophe Ballif’s group at EPFL. In June 2019, he joined Empa as a group leader. He is currently leading a research team investigating novel perovskite semiconductors for energy and optoelectronics applications. In particular, his group’s recent research efforts focus on upscaling of high-performance perovskite-based thin-film tandem solar cells on flexible substrates.

Florian Schindler | Fraunhofer ISE

“Advanced Characterization of Perovskite-Silicon Tandem Solar Cells”

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Dr. Florian Schindler received his Diploma in physics in 2011 and his Ph.D. degree in 2015 from the University of Freiburg, Germany, in collaboration with the Fraunhofer Institute for Solar Energy Systems (ISE) and the Freiburg Materials Research Center FMF. After his Ph.D., he worked as a Post Doc in the department for characterization and simulation with a focus on silicon material properties and highly efficient multicrystalline silicon solar cells. Since 2018, he is head of group “Material and Cell Characterization” in the department “Quality Assurance, Characterization and Simulation” (division Photovoltaics) at Fraunhofer ISE. His research interests range from fundamental silicon material properties to characterization techniques for perovskite-silicon multijunction solar cells.

Tom Aernouts | IMEC

“Efficient Structures And Processes for Upscaling of Perovskite Modules and Tandems”

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Since 2006, Dr. Tom Aernouts is R&D manager of imec’s Thin Film PV team, initially with a strong focus on organic solar cells, developing bulk heterojunction solar cells and fully flexible modules. The group has extended its activity in 2014 with the work on hybrid, perovskite-based thin-film solar cells. A next infrastructure upgrade was completed in 2018 with the move into the EnergyVille facilities, to extend the device size to 35x35cm². Since October 2021, Dr. Aernouts leads the merger of thin-film PV activities at imec and imomec, extending the activity into CIGS, Kesterites and other novel material systems.

Dr. Aernouts received his M.Sc. in semiconductor physics from the Katholieke Universiteit Leuven, Belgium, in 1998, and a Ph.D. in Science in 2006 from the same university.

Holger Neuhaus | Fraunhofer ISE

“Historical Evolution and Forecast of Industrial PV Modules”

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Holger Neuhaus has been working in photovoltaics for over 25 years. He holds a PhD from the University of New South Wales in Sydney and then a development engineer at Pacific Solar Pty Ltd. in Sydney.
He worked for more than 15 years for the Solarworld group, initially responsible for quality assurance and technology in cell production, later heading the global R&D activities along the entire value chain.
In 2018, he joined Fraunhofer ISE. He is responsible for module technology with a strong focus on interconnection, encapsulation, integrated PV, energy yield simulation, reliability, production cost, sustainability, and life cycle assessment.
Since September 2023, Holger Neuhaus has the professorship “Material Systems for Solar Energy Use” at the Institute for Sustainable Technical Systems (INATECH) at the Faculty of Engineering at the University of Freiburg.

Uli Würfel | Fraunhofer ISE

“Effects of Mobile Ionic Species in Perovskite Solar Cells”

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Uli Würfel is the Head of Department Organic and Perovskite Photovoltaics at Fraunhofer ISE. He studied Physics at the Universities of Freiburg and Heidelberg and received his PhD from the University of Freiburg in 2006 with the topic “Electron transport in the nanoporous TiO2 layer of dye solar cells”, which was carried out in close collaboration with the Fraunhofer ISE.
His main research interests are characterization and modelling of organic, perovskite and other types of solar cells and the upscaling of organic solar cells.

Lukas Wagner| University of Marburg

“Can Carbon Electrode-based Perovskite Solar Cells Make Green Energy Technologies More Sustainable?”

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Lukas Wagner is currently PostDoc researcher at the Solar Energy Conversion Group at the University of Marburg. He obtained his PhD (2021) at Fraunhofer Institute for Solar Energy Systems ISE and University of Freiburg on a PhD scholarship of the German Federal Environmental Foundation (DBU).

He obtained a B.Sc. in Electrical Engineering and Information Technology (2013) and a M.Sc. in Optics and Photonics (2015) at the Karlsruhe Institute of Technology (KIT). His bachelor and master theses were carried out at Georgia Institute of Technology in Atlanta, USA, and Fraunhofer ISE, respectively. After his M.Sc. studies, he worked at the French National Research Center for Solar Energy (CEA-INES), developing flexible perovskite solar cells.

Lukas’ research interests are perovskite solar cells with carbon electrodes, advanced photoluminescence-based characterization techniques and assessments of sustainability in energy technologies.

Eugene Katz | Ben Gurion University of the Negev

“Stability Assessment of Perovskite Photovoltaics”

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Eugene A. Katz is a professor at the Ben-Gurion University of the Negev. His research interests include studies and development of a wide range of materials and devices for solar energy conversion such as organic and perovskite-based photovoltaics, concentrator solar cells operated at ultra-high solar concentration (up to 10,000 suns), as well as history of science.

Markus Lenz | University of Applied Sciences and Arts Northwestern Switzerland

“Perovskite Derived Pb: Principles and Pitfalls of Environmental Fate Assessment”

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Markus Lenz is a biologist with a background from RWTH Germany and a Ph.D. in Environmental Engineering from Wageningen University, Netherlands. His primary research revolves around the recycling of industrial by-products and end-of-life products such as (perovskite) photovoltaics. Additionally, his team specializes in conducting environmental fate assessments of metals and metalloids.

Juliane Borchert | Fraunhofer ISE

“Silicon-Perovskite Tandem Solar Cells”

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Dr. Juliane Borchert is the head of the junior research group “Optoelectronic Thin Film Materials” at the University of Freiburg as well as the head of  the research group “Perovskite Materials and Interfaces” at the Fraunhofer Institute for Solar Energy Systems. She studied physics in Berlin, Groningen, and Halle (Saale). Her PhD research was conducted at the University of Oxford where she focused on co-evaporated perovskites for solar cells. She continued this research as a postdoctoral researcher at the University of Cambridge and AMOLF research institute in Amsterdam. Now she leads a team of researchers and technicians who are on a mission to develop the next generation of solar cells combining novel metal-halide perovskite semiconductors and established silicon technology into highly efficient tandem solar cells.

Paul Fassl | Karlsruhe Institute of Technology

“Thermally Evaporated Perovskite Photovoltaics”

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Paul Fassl studied Physics at Heidelberg University, where he graduated with a master’s degree in 2013 and a Ph.D. in 2018. For his PhD, he received a research fellowship from the Heidelberg Graduate School of Fundamental Physics and a mobility fellowship from Heidelberg University for a research stay at Oxford University. His PhD thesis was entitled “Exploration of Properties, Stability and Reproducibility of Perovskite Solar Cells.” In 2019, he joined the Next Generation Photovoltaics division of Prof. Ulrich Paetzold at the Light Technology Institute (LTI) and Institute of Microstructure Technology (IMT) at Karlsruhe Institute of Technology (KIT), where he has been working on the optoelectronic properties of perovskite semiconductors and the development of perovskite/silicon tandem photovoltaics. Since 2023, Fassl is a Group Leader at LTI/IMT focusing on the fundamental understanding and development of thermally evaporated perovskite solar cells. His group is involved in various German and European research projects on perovskite/silicon tandem photovoltaics.

Our Sponsors

Ultra-stable, highly efficient, low-cost perovskite photovoltaics with minimised environmental impact

DIAMOND Horizon Project (Grant Agreement Nº 101084124) joins six European leading universities (University of Groningen, Uppsala University, EPFL, University of Rome Tor Vergata, University of Porto, University of Marburg), two research institutes (Fraunhofer ISE, CEA) and four industry partners (Dyenamo, BeDimensional, Solaronix, PixelVoltaic) from seven different countries.

DIAMOND aims at developing novel hermetic encapsulation approaches and highly stable device designs that are evaluated by standardized and novel stability assessment methods. DIAMOND also aims to optimise materials and cell stacks to reach efficiencies exceeding the record values of silicon PV. Fully printable module architectures are targeted for rapid industrial up-scaling, allowing lower manufacturing costs and local production in the EU. Specific device designs that enable the lowest carbon-footprint, material criticality and toxicity together with enhanced recyclability are targeted.

Combining these ambitions, DIAMOND strives to provide a strong impact on the EU’s future environmental, economic and societal development, paving the way for an EU-made sustainable energy technology with the lowest carbon-footprint that ensures a full integration into the circular economy.

Twinning for excellence in TEsting new generation PV: Long-term STAbility and field REliability (TESTARE)

TESTARE is a Horizon Europe project (Grant Agreement number 101079488) that aims to primarily stimulate excellence at the University of Cyprus (UCY) in the topic of new-generation PV technologies from the perspective of long-term stability and field reliability testing. In particular, the project aims to improve the research and innovation (R&I) capabilities of the DegradationLab, a new research strategic unit of the UCY which focuses on the study of degradation and failures of new and emerging solar PV devices. To this end, UCY will link effectively with internationally-leading research institutions, namely Interuniversity Microelectronics Centre (IMEC) in Belgium, Fraunhofer Institute for Solar Energy Systems (Fraunhofer) in Germany, and Ben-Gurion University of the Negev (BGU) in Israel.  Essentially the project targets to improve the R&I output of the DegradationLab in the defined domain, boost its success rate in research funding bids, enhance its reputation and visibility, develop long-term ties with the advanced partners, strengthen links with industry and with (Middle East and North Africa) MENA countries, as well as contribute to enhancing research management and administration capabilities at UCY towards making more sustainable its overall research ecosystem. To achieve these targets joint activities between the twinning partners are foreseen including researcher exchanges, trainings, infrastructure sharing, a joint exploratory research project, PhD schools, webinars, networking, etc. TESTARE started on 01/01/2023 and is running for three years.