Perovskite/Silicon Tandem Solar Cells: Challenges Towards HighEfficiency in 4-Terminal and Monolithic Devices

Jeremie Werner, Florent Sahli, Brett Kamino, Davide Sacchetto, Matthias Brauninger, Arnaud Walter, Soo-Jin Moon, Loris Barraud, Bertrand Paviet-Salomon, Jonas Geissbuehler, Christophe Allebe, Raphael Monnard, Stefaan De Wolf, Matthieu Despeisse, Sylvain Nicolay, Bjoern Niesen, Christophe Ballif

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


Perovskite and silicon solar cells have recently been shown to be perfect partners for tandem devices with potentially very high efficiency at low additional costs over standard silicon cells. Here, we present the development of efficient perovskite top cells suitable for 4-terminal and monolithic tandem integration on silicon heterojunction bottom cells. We show a 4-terminal tandem measurement with 25.6% efficiency on small cells and 23.2% on a 1 cm 2 fully integrated device. Monolithic tandems with >20% efficiencies were developed on several types of silicon wafers, allowing for a direct optical comparison. We identify parasitic absorption to be the limiting factor for high performance and discuss several practical solutions to reduce them.
Original languageEnglish (US)
Title of host publication2017 IEEE 44th Photovoltaic Specialist Conference (PVSC)
Number of pages4
ISBN (Print)9781509056057
StatePublished - 2017

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