Interplay between temperature and bandgap energies on the outdoor performance of perovskite/silicon tandem solar cells

Erkan Aydin (), Thomas G. Allen, Michele De Bastiani, Lujia Xu, Jorge Ávila, Michael Salvador, Emmanuel Van Kerschaver and Stefaan De Wolf ()
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Erkan Aydin: King Abdullah University of Science and Technology (KAUST)
Thomas G. Allen: King Abdullah University of Science and Technology (KAUST)
Michele De Bastiani: King Abdullah University of Science and Technology (KAUST)
Lujia Xu: King Abdullah University of Science and Technology (KAUST)
Jorge Ávila: King Abdullah University of Science and Technology (KAUST)
Michael Salvador: King Abdullah University of Science and Technology (KAUST)
Emmanuel Van Kerschaver: King Abdullah University of Science and Technology (KAUST)
Stefaan De Wolf: King Abdullah University of Science and Technology (KAUST)

Nature Energy, 2020, vol. 5, issue 11, 851-859

Abstract: 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

Date: 2020
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DOI: 10.1038/s41560-020-00687-4

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