Slot-die coated perovskite solar cell with 22% power conversion efficiency and minimodules via grain boundaries passivation

Janardan Dagar^a, Jinzhao Li^a, Oleksandra Shargaieva^a, Markus Fenske^b, Christof Schultz^b, Florian Mathies^a, Kari Sveinbjörnsson^c, Hans Köbler^d, Sergei Trofimov^f, Boris Naydenov^f, Karunanantharajah Prashanthan^f, Rowan MacQueen^f, Gopinath Parmasivam^a, Igal Levine^e, Ivo Zizak^h, Rutger Schlatmann^a^,^b, Bert Stegemann^b, Antonio Abate^d, Steve Albrecht^c, Emil List- Kratochvil^g, Eva Unger^a^,^g

^aHelmholtz-Zentrum Berlin für Materialien und Energie GmbH, aYoung Investigator group Hybrid Materials Formation and Scaling, Kekuléstr. 5, Berlin 12489, Germany

^bUniversity of Applied Sciences – HTW Berlin, Wilhelminenhofstr. 75a, D-12459 Berlin, Germany

^cHelmholtz-Zentrum Berlin für Materialien und Energie GmbH, bYoung Investigator group Perovskite Tandem Solar Cells, Helmholtz-Zentrum Berlin, Kekuléstrasse 5, 12489 Berlin, Germany.

^dHelmholtz-Zentrum Berlin für Materialien und Energie GmbH, cYoung Investigation group Active Materials and Interfaces for Stable Perovskite Solar Cells, Kekuléstr. 5, Berlin 12489, Germany

^eHelmholtz-Zentrum Berlin für Materialien und Energie GmbH, dHelmholtz-Zentrum Berlin, HySPRINT Innovation Lab, Institute for Silicon Photovoltaics, Kekuléstrasse 5, 12489 Berlin, Germany

^fHelmholtz-Zentrum Berlin für Materialien und Energie GmbH, fHelmholtz-Zentrum Berlin, Spins in Energy Conversion and Quantum Information Science

^g3Humboldt-Universität zu Berlin Institut für Physik, Institut für Chemie IRIS Adlershof Brook-Taylor-Straße 6, 12489 Berlin, Germany

^hHelmholtz-Zentrum Berlin für Materialien und Energie GmbH,, eDepartment of Structure and Dynamics of Energy Materials, Hahn-Meitner-Platz 1, Berlin D-14109, Germany

International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)

València, Spain, 2022 May 19th - 25th

Organizers: Pablo Docampo, Eva Unger and Elizabeth Gibson

Contributed talk, Janardan Dagar, presentation 182
DOI: https://doi.org/10.29363/nanoge.hopv.2022.182
Publication date: 20th April 2022

One of the most challenging aspects of commercializing perovskite solar cells (PSC) is scaling up efficient and stable perovskite layers. Here, we demonstrate the grain boundary passivation approach through the addition of excessive perovskite precursor in the perovskite ink enabling controlled nucleation and growth of homogeneous and high quality perovskite MA_0.6FA_0.4PbI₃ (MAFA) film via scalable slot die coating technique. In-situ photoluminescence monitoring give the insight regarding perovskite crystallization during the coating. With the best optimized content of the perovskite precursor composition, a p-i-n-type champion perovskite solar cell power conversing efficiency (PCE) of 22% was achieved and retained 91% of initial efficiency after aging 1000 hours under continuous 1 sun illumination. We Scaled devices to larger areas though fully laser patterned series-interconnected mini-modules delivering 20.4% efficiency of 12.73 cm² active area. This is the new performance record for a p-i-n structure type slot die coated minimodule.

Keywords: Scalable, perovskite solar cell, slot die, crystallization, minimodule

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International Conference on Hybrid and Organic Photovoltaics

International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.

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