Inkjet Printed Perovskite Photovoltaics

Florian Mathies^a^,^b, Gerardo Hernandez Sosa^a^,^b, Fabian Schackmar^a^,^c, Bryce S. Richards^a^,^c, Ulrich Lemmer^a^,^c, Ulrich W. Paetzold^a^,^c

^aLight Technology Institute, Karlsruhe Institute of Technology, Engesserstr. 13, 76131, Germany

^bInnovationLab GmbH, Heidelberg-Germany, Speyerer Straße, 4, Heidelberg, Germany

^cInstitute of Microstructure Technology, Karlsruhe Institute of Technology, H.-v.-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany

International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV18)

Benidorm, Spain, 2018 May 28th - 31st

Organizers: Emilio Palomares and Rene Janssen

Oral, Ulrich W. Paetzold, presentation 108
DOI: https://doi.org/10.29363/nanoge.hopv.2018.108
Publication date: 21st February 2018

Organic–inorganic hybrid perovskites are the new shooting stars on the high efficiency solar cell sky. The efficiencies of perovskite solar cells are close to those of well-established thin-film solar cells based on cadmium telluride (CdTe) or copper indium gallium diselenide (CIGS). However, in contrast to these established technologies, perovskite absorber materials can be entirely solution processed, which bears the promise of low production cost. Most research and development on scalable solution-processed perovskite photovoltaics focused so far on slot-die coating, blade coating, and spray coating. Only a few reports exist yet on non-contact inkjet printing, despite the great success of industrial inkjet printers in the fabrication of large area organic light emitting devices [1].

In this contribution, we report on our recent advances on non-contact inkjet-printed perovskite photovoltaics. Digital inkjet printing offers rapid deposition of perovskite absorber layers for large area perovskite absorber layers as well as perovskite solar cells of arbitrary shape. By adjusting the drop spacing of the inkjet printer cartridge and making use of multipass printing, we demonstrate excellent control of the perovskite layer formation and perovskite layer thickness [2,3]. Inkjet-printed perovskite solar cells based on methylammonium lead iodide as well as triple cation perovskite layers with 10 % cesium in a mixed formamidinium/methylammonium lead iodide/bromide composite are demonstrated. For the latter, initial power conversion efficiency as high as 14.0% are demonstrated. The devices also show continuous power output at constant voltage, resulting in a power conversion efficiency of 12.9 % after 5 min of MPP tracking, representing a major improvement from previously reported results. The extended study furthermore demonstrates the improved stability of the perovskite solar cells based on triple cation perovskite absorber layers compared to perovskite solar cells base don methylammonium lead iodide.

References

[1] Kateeva, “Kateeva webpage,” URL: “http://kateeva.com/ company/newsroom/in-the-news/”, accessed January, 2018.
[2] F. Mathies, T. Abzieher, A. Hochstuhl, K. Glaser, A. Colsmann, U. W. Paetzold, G. Hernandez-Sosa, U. Lemmer, and A. Quintilla, J. Mater. Chem. A, vol. 4, 19207-19213, 2016.
[3] F. Mathies, H. Eggers, B. S. Richards, G. Hernandez-Sosa, U. Lemmer, and U. W. Paetzold, in preparation.

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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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