Solar experts meet in Berlin
The sixth tandemPV Workshop will take place in Berlin, Germany from June 17-19, 2026, hosted by Helmholtz-Zentrum Berlin.
The tandemPV Workshop Series is a unique platform that brings together leading experts and researchers from the silicon and thin-film photovoltaic communities, fostering collaboration and innovation.
Our PV experts will join the workshop and participate with various contributions. Take your chance and meet them for interesting discussions about our recent research!
In addition, participants will have the opportunity to take a guided tour of our laboratories and research facilities.
Workshop highlights:
- Interdisciplinary collaboration
- Silicon and thin-film integration: Engage with experts from both silicon and thin-film sectors, exploring the latest advancements and synergies in photovoltaic technology. This unique integration aims to harness the strengths of both materials, pushing the boundaries of efficiency and performance in solar cells.
- Material scientists and device specialists: Connect with professionals across the material science and device engineering spectrum. This is an opportunity to share insights and breakthroughs, fostering a collaborative environment where ideas can be exchanged, and new collaborations can be formed.
PVcomB's contributions:
Oral presentations
- Marko Remec et al.
„Challenges in outdoor performance monitoring of perovskite based tandem solar cells“ - Xuan Li
"In-situ Monitoring of Quench-Controlled Crystallisation Kinetics in Slot-Die Coated Perovskites" - Freya Leyland
"Barrier Properties of TCOs for Thermal Stability of Silicon-Perovskite Tandem Solar Cells with Screen-printed Metallisation"
Poster presentations
- Max Bernardes de Araujo et al.
„Engineering Sublimable Electron Transport Layers for Perovskite/ Silicon Tandem Solar Cells - Darja Erfurt, Angelika Harter
„Balancing performance and stability: zinc migration in tunnel recombination junctions for perovskite/silicon tandems“ - Marlene Härtel et al.
„Good news for industry: slow is not always better on the integration of sputter-deposited transparent front electrode“ - Jannik Kleesiek et al.
„Hidden Mobility: Silver Agglomeration and TCO Rupture in Aged Silicon/Perovskite Tandem Mini-Modules“ - Jona Kurpiers, Hajar Moumine
„Reusablility and degradation mitigation strategies of FAI during thermal evaporation for PVD processed perovskite absorbers“ - Arman Mahboubi Soufiani et al.
„Sequentially Evaporated 1.70ev and 1.65eV perovskite absorbers in a point-source evaporator and the impact of annealing condition“ - Thede Mehlhop et al.
„Investigating Subcell Behaviour in 3T Perovskite/CIGS Tandems“ - Nicolas Otto et al.
„Towards Flexible Tandem Modules: Scalable Laser Interconnection of Perovskite-CIGS Tandems“ - Tadeus Ranisch et al.
„Laser P1 Patterning on Flexible Substrates for Perovskite-CIGS Tandem Modules“ - Malin Rosin et al.
„Stability of laminated single-junction Perovskite Solar Cells related to choice of encapsulant material“ - Johanna Schenk et al.
„Comparison of light and current induced degradation in perovskite single junction solar cells“ - Philipp Wagner et al.
„Influence of H2/SiH4 dilution and CO2 plasma treatment on the opto-electronic properties of phosphorous-doped nanocrystalline Silicon oxide for perovskite-silicon tandem solar cells“
- New contact material boosts the efficiency of perovskite solar cellsA newly developed material for the electron contact improves the efficiency of single perovskite solar cells and perovskite/silicon tandem solar cells. The new material is based on a carborane molecule. It offers several advantages over the standard material C60, as shown by the study led by Steve Albrecht’s team. The new material has since been patented and is already commercially available.
- Precision interface chemistry pushes perovskite solar cells beyond 26% efficiencyAn international research collaboration has developed a new molecular strategy for controlling one of the most critical interfaces in perovskite solar cells. The resulting solar cells reached a power conversion efficiency of 26.19% in the n i p architecture, together with strong operational stability under prolonged illumination and elevated temperature. The results have been published in the Journal of the American Chemical Society.
- Perovskite triple-junction solar cells: Even more efficient with GO/SAM bilayersPerovskite semiconductors efficiently convert sunlight into electrical energy; they are also inexpensive and extremely lightweight. A team at HZB has developed a triple-junction solar cell comprising different perovskite semiconductors, with a novel bilayer of graphene oxide (GO) and a self-assembled monolayer (SAM) as the hole conductor. This bilayer significantly increases both efficiency and long-term stability. The efficiency of the novel perovskite triple-junction solar cell is 27.3% and shows hardly any decline even after more than 770 hours of operation. The study has been published in the renowned journal Joule.