Abstract
Perovskite/silicon tandem solar cells promise power conversion efficiencies beyond the Shockley–Queisser limit of
single-junction devices; however, their actual outdoor performance is yet to be investigated. Here we fabricate 25% efficient
two-terminal monolithic perovskite/silicon tandem solar cells and test them outdoors in a hot and sunny climate. We find that
the temperature dependence of both the silicon and perovskite bandgaps—which follow opposing trends—shifts the devices
away from current matching for two-terminal tandems that are optimized at standard test conditions. Consequently, we argue
that the optimal perovskite bandgap energy at standard test conditions is
Original language | English (US) |
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Journal | Nature Energy |
DOIs | |
State | Published - Sep 14 2020 |
Bibliographical note
KAUST Repository Item: Exported on 2020-10-01Acknowledged KAUST grant number(s): OSR-CARF URF/1/3079-33-01
Acknowledgements: The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST) under award nos. OSR-CARF URF/1/3079-33-01 and IED OSR-2019-4208. The authors thank TUV Rheinland Group for providing solar spectra from their outdoor test field on the KAUST campus. J.Á. thanks the Spanish Ministry of Education, Culture and Sport for his pre-doctoral grant (FPU14/04466).