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

Erkan Aydin, Thomas Allen, Michele de Bastiani, Lujia Xu, Jorge Ávila, Michael Salvador, Emmanuel Van Kerschaver, Stefaan De Wolf

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

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 languageEnglish (US)
JournalNature Energy
DOIs
StatePublished - Sep 14 2020

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