Shingle Solar Cells

Magazine discharge on the PV-TEC cell tester
© Fraunhofer ISE / Photo: Dirk Mahler
Magazine discharge on the PV-TEC cell tester: shingle solar cell from below.
Pin contacting of a shingle cell in the PV-TEC Back End
© Fraunhofer ISE / Photo: Dirk Mahler
Pin contacting of a shingle solar cell in the PV-TEC Back End.
High-efficiency shingle solar cells in a car roof
© Fraunhofer ISE / Photo: Dirk Mahler
High-efficiency shingle solar cells in a car roof.

To make solar modules as efficient as possible, the photoactive area must be maximized and the power loss must be minimized. The technique of laying out solar cells in a module so that their edges overlap like shingles on a house roof is called »shingling«

With the shingled layout, there are fewer gaps between the individual solar cells so more of the sunlight that is incident on the module can be absorbed. Instead of using external connectors to transport the current from one cell to the next, the area of the cell overlap is used as an electrical connector.

The best way to design shingle solar cells is to first divide the cells into narrow strips. These cell strips give the shingle solar cells and modules an aesthetic appearance. Large metallic areas for the connectors are hidden by the overlap so that the module area is homogeneous, making them particularly attractive for integrated applications like building facades or car roofs. In addition, shingled solar cells reflect less light, and thus generate more electricity.

The adaptation of solar cell production from the conventional approach to shingled solar cells requires some dedicated optimizations, however. In recent years, we have tested and further developed these techniques in a pilot line production at Fraunhofer ISE. We have evaluated low-damage laser separation processes (e.g. thermal laser separation) and implemented them in the pilot line. For the suppression of edge recombination, we developed a passivated edge technology for which we obtained corresponding patents.

R&D Services for Solar Cell and Module Manufacturers and Equipment Manufacturers

We are open for inquiries regarding research contracts or cooperations within the scope of joint projects. Our portfolio includes:

  • Adaptation of metal electrode design
  • Adaptation of laser cutting procedures for cutting out the shingles
  • Minimization of power losses through recombination at the solar cell edges
  • Providing samplings of our solar cell manufacturing processes and comparisons with conventional approaches.
  • Accompanying the changeover process in the production
  • Comparison of existing processes and production line optimization
  • Testing and refinement of new equipment concepts and preparation for use in series production.

Further Information on this Research Topic:

Photovoltaics:​ Production Technology and Transfer

Interconnection and Encapsulation Technologies

Laser Technologies

R&D Infrastructure

PV-TEC – Photovoltaic Technology Evaluation Center

Publications on Shingle Solar Cells

Jahr
Year
Titel/Autor:in
Title/Author
Publikationstyp
Publication Type
2023 How to assess the electrical quality of solar cell interconnection in shingle solar modules
Weber, Julian; Rößler, Torsten
Zeitschriftenaufsatz
Journal Article
2023 Passivated Edge Technology (PET): Edge Passivation for Industrial Solar Cell Applications
Lohmüller, Elmar; Huyeng, Jonas; Hofmann, Marc; Baliozian, Puzant; Richter, Armin; Göbel, Alexander; Clement, Florian; Preu, Ralf
Vortrag
Presentation
2023 Development and Characterization of Bifacial p-type Silicon Shingle Solar Cells with Edge Passivation
Baliozian, Puzant
Dissertation
Doctoral Thesis
2023 IV Measurements of Shingle Solar Cells
Krieg, Alexander; Ramspeck, Klaus; Wöhrle, Nico; Kunze, Philipp; Rauer, Michael; Fell, Andreas; Greulich, Johannes; Rein, Stefan
Konferenzbeitrag
Conference Paper
2023 Shingle cell IV characterization based on spatially resolved host cell measurements
Kunze, Philipp; Demant, Matthias; Krieg, Alexander; Tummalieh, Ammar; Wöhrle, Nico; Rein, Stefan
Zeitschriftenaufsatz
Journal Article
2023 IV Measurements of Shingle Solar Cells
Krieg, Alexander; Ramspeck, Klaus; Wöhrle, Nico; Kunze, Philipp; Rauer, Michael; Fell, Andreas; Greulich, Johannes; Rein, Stefan
Poster
2023 Lateral Currents in Shingle Solar Modules Detected by Magnetic Field Imaging
Klasen, Nils; Weber, Julian; Kraft, Achim; Neuhaus, Holger
Zeitschriftenaufsatz
Journal Article
2023 Overview of key results achieved in H2020 HighLite project helping to raise the EU PV industries' competitiveness
Tous, Loïc; Govaert, Jonathan; Harrison, Samuel; Carrière, Carolyn; Barth, Vincent; Giglia, Valentin; Buchholz, Florian; Chen, Ning; Halm, Andreas; Faes, Antonin; Nogay, Gizem; Quest, Hugo; Rößler, Torsten; Fellmeth, Tobias; Reinwand, Dirk; Stolzenburg, Hannah; Schindler, Florian; Mittag, Max; Morlier, Arnaud; Bokalič, Matevž; Brecl, Kristijan; Kikelj, Miha; Topic, Marko; Kester, Josco C.P.; Wendlandt, Stefan; Galiazzo, Marco; Voltan, Alessandro; Galbiati, Giuseppe; Ortiga, Marc Estruga; Torregrosa, Frank; Grimm, Michael; Denafas, Julius; Radavičius, Tadas; Lukinskas, Povilas; Savisalo, Tuukka; Regrettier, Thomas; Gordon, Ivan
Zeitschriftenaufsatz
Journal Article
2023 Challenges and Advantages for Cut Solar Cells for Shingling and Half-Cell Modules
Huyeng, Jonas; Lohmüller, Elmar; Rößler, Torsten; Shabanzadeh, Behnaz; Reichel, Christian; Weber, Julian; Hofmann, Marc; Kutzleben, Daniel von; Abdel Latif, Najwa; Kraft, Achim; Neuhaus, Holger; Clement, Florian; Preu, Ralf
Konferenzbeitrag
Conference Paper
2023 TOPCon Shingle Solar Cells: Thermal Laser Separation and Passivated Edge Technology
Lohmüller, Elmar; Baliozian, Puzant; Gutmann, Leon; Kniffki, Leander; Richter, Armin; Wang, Lili; Dunbar, Ricky; Lepert, Arnaud; Huyeng, Jonas; Preu, Ralf
Zeitschriftenaufsatz
Journal Article
2023 Thermal laser separation and high-throughput layer deposition for edge passivation for TOPCon shingle solar cells
Lohmüller, Elmar; Baliozian, Puzant; Gutmann, Leon; Kniffki, Leander; Beladiya, Vivek; Geng, Jürgen; Wang, Lili; Dunbar, Ricky B.; Lepert, Arnaud; Hofmann, Marc; Richter, Armin; Huyeng, Jonas
Zeitschriftenaufsatz
Journal Article
2022 Performance of Shingled Solar Modules Under Partial Shading
Klasen, Nils; Weißer, D.; Rößler, Torsten; Neuhaus, Dirk Holger; Kraft, Achim
Zeitschriftenaufsatz
Journal Article
2022 Contactless Measurement of Current-Voltage Characteristics for Silicon Solar Cells
Greulich, Johannes; Wirtz, Wiebke; Höffler, Hannes; Wöhrle, Nico; Juhl, Matthias K.; Kunz, Oliver; Rein, Stefan; Bett, Andreas W.
Zeitschriftenaufsatz
Journal Article
2022 Application of SHJ and TOPCon Shingle Cells in Full Format and Integrated Modules
Nikitina, Veronika; Reinwand, Dirk; Fellmeth, Tobias; Neven-du Mont, Sebastian; Kutzleben, Daniel von; Rößler, Torsten; Neuhaus, Dirk Holger
Konferenzbeitrag
Conference Paper
2022 Progress in shingle interconnection based on electrically conductive adhesives at Fraunhofer ISE
Rößler, Torsten; Kutzleben, Daniel von; Klasen, Nils; Nikitina, Veronika; Baliozian, Puzant; Münzer, Anna; Fokuhl, Esther; Kraft, Achim
Konferenzbeitrag
Conference Paper
2022 Magnetic Field Imaging (MFI) of Shingle Solar Modules
Weber, Julian; Hoffmann, Stephan; Kaufmann, Kai; De Rose, Angela
Konferenzbeitrag
Conference Paper
2022 FoilMet®-Interconnect: Busbarless, electrically conductive adhesive-free, and solder-free aluminum interconnection for modules with shingled solar cells
Paschen, Jan; Baliozian, Puzant; John, Oliver; Lohmüller, Elmar; Rößler, Torsten; Nekarda, Jan F.
Zeitschriftenaufsatz
Journal Article
2022 A Comprehensive Study of Module Layouts for Silicon Solar Cells under Partial Shading
Klasen, Nils; Lux, Florian; Weber, Julian; Roessler, Torsten; Kraft, Achim
Zeitschriftenaufsatz
Journal Article
2022 Root Cause Analysis of Solar Cell Cracks at Shingle Joints
Klasen, Nils; Heinz, Friedemann D.; De Rose, Angela; Rößler, Torsten; Kraft, Achim; Kamlah, M.
Zeitschriftenaufsatz
Journal Article
2021 Root Cause Analysis of Solar Cell Cracks at Shingle Joints
Klasen, Nils; Heinz, Friedemann D.; De Rose, Angela; Rößler, Torsten; Kraft, Achim; Kamlah, M.
Vortrag
Presentation
2021 Quantitative Evaluation of the Shading Resilience of PV Modules
Klasen, Nils; Lux, F.; Weber, Julian; Weißer, Daniel; Rößler, Torsten; Kraft, Achim; Neuhaus, Dirk Holger
Konferenzbeitrag
Conference Paper
2021 Thermal Laser Separation of PERC and SHJ Solar Cells
Baliozian, Puzant; Münzer, Anna; Lohmüller, Elmar; Nair, A.; Fellmeth, Tobias; Wöhrle, Nico; Höffler, Hannes; Spribille, Alma; Preu, Ralf
Zeitschriftenaufsatz
Journal Article
2020 Laser Assisted Separation Processes for Bifacial pSPEER Shingle Solar Cells
Münzer, Anna; Baliozan, Puzant; Ahmed, K.; Nair, A.; Lohmüller, Elmar; Fellmeth, Tobias; Spribille, Alma; Preu, Ralf
Konferenzbeitrag
Conference Paper
2020 Postmetallization "Passivated Edge Technology" for Separated Silicon Solar Cells
Baliozian, Puzant; Al-Akash, Mohammad; Lohmüller, Elmar; Richter, Armin; Fellmeth, Tobias; Münzer, Anna; Wöhrle, Nico; Saint-Cast, Pierre; Stolzenburg, H.; Spribille, Alma; Preu, Ralf
Zeitschriftenaufsatz
Journal Article
2020 Post-Metallization Passivated Edge Technology (PET) for Bifacial Silicon Shingle Solar Cells - pSPEERPET
Baliozan, Puzant; Lohmüller, Elmar; Fellmeth, Tobias; Richter, Armin; Münzer, Anna; Bhandary, A.; Wöhrle, Nico; Spribille, Alma; Preu, Ralf
Konferenzbeitrag
Conference Paper
2020 Integrated Lightweight, Glass-Free PV Module Technology for Box Bodies of Commercial Trucks
Kutter, Christoph; Basler, Felix; Alanis, Luis Eduardo; Markert, Jochen; Heinrich, Martin; Neuhaus, Dirk Holger
Konferenzbeitrag
Conference Paper
2020 Passivated emitter and rear cell - Devices, technology, and modeling
Preu, Ralf; Lohmüller, Elmar; Lohmüller, Sabrina; Saint-Cast, Pierre; Greulich, Johannes M.
Zeitschriftenaufsatz
Journal Article
2020 Cell-To-Module (CTM) Analysis for Photovoltaic Modules with Cell Overlap
Shahid, Jibran; Karabacak, A.Ö.; Mittag, Max
Vortrag
Presentation
2019 FEM Simulation of Deformations in Strings of Shingled Solar Cells Subjected to Mechanical Reliability Testing
Klasen, Nils; Romer, Pascal; Beinert, Andreas; Kraft, Achim
Konferenzbeitrag
Conference Paper
2019 Accelerated TC Test in Comparison with Standard TC Test for PV Modules with Ribbon, Wire and Shingle Interconnection
Schiller, C.; Rendler, Li Carlos; Eberlein, Dirk; Mülhöfer, Georg; Kraft, Achim; Neuhaus, Dirk Holger
Konferenzbeitrag
Conference Paper
2019 PERC-Based Shingled Solar Cells and Modules at Fraunhofer ISE
Baliozian, Puzant; Klasen, Nils; Wöhrle, Nico; Kutter, Christoph; Stolzenburg, H.; Münzer, Anna; Saint-Cast, Pierre; Mittag, Max; Lohmüller, Elmar; Fellmeth, Tobias; Al-Akash, Mohammad; Kraft, Achim; Heinrich, Martin; Richter, Armin; Fell, Andreas; Neuhaus, Dirk Holger; Preu, Ralf
Zeitschriftenaufsatz
Journal Article
2019 Edge Recombination Analysis of Silicon Solar Cells Using Photoluminescence Measurements
Stolzenburg, Hannah; Fell, Andreas; Schindler, Florian; Kwapil, Wolfram; Richter, Armin; Baliozan, Puzant; Schubert, Martin C.
Konferenzbeitrag
Conference Paper
2019 Analysis of Shingle Interconnections in Solar Modules by Scanning Acoustic Microscopy
Verissimo Mesquita, Laila; Klasen, Nils; Fokuhl, Esther; Philipp, Daniel; Pitta Bauermann, Luciana
Konferenzbeitrag
Conference Paper
2018 Einkapselungsfolie für ein Photovoltaikmodul in Schindelbauweise
Wirth, Harry
Patent
2018 Bifacial shingle solar cells on p-type Cz-Si (pSPEER)
Baliozan, Puzant; Lohmüller, Elmar; Fellmeth, Tobias; Wöhrle, Nico; Krieg, Alexander; Preu, Ralf
Konferenzbeitrag
Conference Paper
2018 Metallization Fraction of Bifacial pSPEER Shingle Solar Cells
Al-Akash, Mohammad; Baliozan, Puzant; Lohmüller, Elmar; Fellmeth, Tobias; Wöhrle, Nico; Preu, Ralf
Konferenzbeitrag
Conference Paper
2018 Bifacial p-type silicon shingle solar cells - the "pSPEER" concept
Baliozian, Puzant; Lohmüller, Elmar; Fellmeth, Tobias; Wöhrle, Nico; Krieg, Alexander; Preu, Ralf
Zeitschriftenaufsatz
Journal Article
2018 Bifacial pSPEER Solar Cells for Shingle Modules
Baliozan, Puzant; Fellmeth, Tobias; Wöhrle, Nico; Lohmüller, Elmar; Preu, Ralf
Konferenzbeitrag
Conference Paper
2018 Comparison of Layouts for Shingled Bifacial PV Modules in Terms of Power Output, Cell-to-Module Ratio and Bifaciality
Mondon, Andrew; Klasen, Nils; Fokuhl, Esther; Mittag, Max; Heinrich, Martin; Wirth, Harry
Konferenzbeitrag
Conference Paper
2017 Cell-to-Module (CTM) analysis for photovoltaic modules with shingled solar cells
Mittag, Max; Zech, Tobias; Wiese, Martin; Bläsi, David; Ebert, Matthieu; Wirth, Harry
Vortrag
Presentation
2017 The SPEER solar cell - simulation study of shingled bifacial PERC-technology-based stripe cells
Wöhrle, Nico; Fellmeth, Tobias; Lohmüller, Elmar; Baliozan, Puzant; Fell, Andreas; Preu, Ralf
Konferenzbeitrag
Conference Paper
2017 Shingled cell interconnection: A new generation of bifacial PV-modules
Klasen, Nils; Mondon, Andrew; Kraft, Achim; Eitner, Ulrich
Konferenzbeitrag
Conference Paper
2017 The development of shingled cells and modules
Preu, Ralf
Vortrag
Presentation
2015 Triangular Ribbons for Improved Module Efficiency
Mittag, Max; Beinert, Andreas; Rendler, Li Carlos; Ebert, Matthieu; Eitner, Ulrich
Konferenzbeitrag
Conference Paper
2012 Field thermal performance of naturally ventilated solar roof with PCM heat sink
Kosny, J.; Biswas, K.; Miller, W.; Kriner, S.
Zeitschriftenaufsatz
Journal Article
2006 Solar cell processing of recrystallized wafer equivalents on low-cost ceramics
Janz, Stefan; Reber, S.; Habenicht, Holger; Lindekugel, Stefan; Lautenschlager, Harald; Schetter, Christian; Lutz, F.
Konferenzbeitrag
Conference Paper
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