Outdoor stability study of 4-terminal perovskite-silicon tandem modules and their single junction counterparts

Markus Kohlstädt^a^,^b, Aranzazu Aguirre^c^,^d^,^e, Elias Peraticos^f, Vasiliki Paraskeva^f, Matthew Savvas Harry Norton^f, Mathias List^a^,^b, Tamara Merckx^c^,^d^,^e, Hamed Javanbakht Lomeri^c^,^d^,^e, Eugene Katz^g, Maria Hadjipanayi^f

^aFraunhofer Institute for Solar Energy Systems ISE, Germany, Heidenhofstraße, 2, Freiburg im Breisgau, Germany

^bUniversity of Freiburg, Freiburg Materials Research Center (FMF), Stefan-Meier-Straße 21, Freiburg, 79104, Germany

^cImec, imo-imomec, Thin Film PV Technology, Thor Park 8320, 3600 Genk, Belgium

^dEnergyVille, imo-imomec, Thor Park 8320, 3600 Genk, Belgium

^eHasselt University, imo-imomec, Martelarenlaan 42, 3500 Hasselt, Belgium

^fFOSS Research Centre for Sustainable Energy, Department of Electrical and Computer Engineering, University of Cyprus

^gBen Gurion University of the Negev (BGU), Beer Sheva - 8410501, Israel

Materials for Sustainable Development Conference (MATSUS)
Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)

Reliability and Circularity of Perovskite-Based Photovoltaics - #RECIPE25

Sevilla, Spain, 2025 March 3rd - 7th

Organizers: Maria Hadjipanayi, Markus Kohlstädt and Anurag Krishna

Oral, Markus Kohlstädt, presentation 337
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.337
Publication date: 16th December 2024

Besides demonstration of scalable processes for realization of perovskite based photovoltaics, stability of corresponding devices under operating conditions needs to be demonstrated to rationalize their industrial fabrication and marketability. To this end, we investigated outdoor stability of encapsulated 4-terminal perovskite-silicon tandem modules. In parallel, the stability of the individual devices in a single junction architecture was tested, i.e. of silicon solar cells illuminated with a spectrum not filtered by the wide band gap perovskite top cells and of semitransparent perovskite single junction modules without silicon solar cells at their back.

It is quite frequently discussed that applied load, e.g. by tracking the maximum power point (MPP) of the device under test, can positively affect stability, possibly due to a higher concentration of free charge carriers under open circuit conditions [1]. We performed comparative stability tests with devices in single or tandem configuration and held at open circuit or maximum power point and could not find significant changes with regards to device stabilty, which confirms one of our earlier studies on single junction perovskite modules [2]. Periodic scans of the full IV curves of all devices allowed tracking of individual solar cell figures of merit and their analyses in dependence of e.g. illumination conditions or temperature.

References:

[1] Domanski, K., Alharbi, E.A., Hagfeldt, A. et al. Systematic investigation of the impact of operation conditions on the degradation behaviour of perovskite solar cells. Nat Energy 3, 61–67 (2018).

[2] Norton, M.S.H., Kohlstädt, M., Hadjipanayi, M. et al. Experiences of Continuous On-Sun Performance Measurements of Perovskite Mini-Modules. EU PVSEC 2020, 3BO.10.4, 606-610.

Acknowledgements:

This work has been funded by the European Union's Horizon Europe research and innovation programme under grant agreement No. 101079488, project TESTARE.

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