- Perovskite/silicon tandem photovoltaics (PVs) promise to accelerate the decarbonization of our energy systems. Here, we present a thorough subcell diagnosis methodology to reveal deep insights into the practical efficiency limitations of state-of-the-art perovskite/silicon tandem PVs. Our subcell selective intensity-dependent photoluminescence (PL) and injection-dependent electroluminescence (EL) measurements allow independent assessment of pseudo-V-OC and power conversion efficiencies (PCEs) for both subcells. We reveal identical metrics from PL and EL, which implies well-aligned energy levels throughout the entire cell. Relatively large ideality factors and insufficient charge extraction, however, cause each a fill factor penalty of about 6% (absolute). Using partial device stacks, we then identify significant losses in standard perovskite subcells due to bulk and interfacial recombination. Lastly, we present strategies to minimize these losses using triple halide (CsFAPb(IBrCI)(3)) based perovskites. Our results give helpfulPerovskite/silicon tandem photovoltaics (PVs) promise to accelerate the decarbonization of our energy systems. Here, we present a thorough subcell diagnosis methodology to reveal deep insights into the practical efficiency limitations of state-of-the-art perovskite/silicon tandem PVs. Our subcell selective intensity-dependent photoluminescence (PL) and injection-dependent electroluminescence (EL) measurements allow independent assessment of pseudo-V-OC and power conversion efficiencies (PCEs) for both subcells. We reveal identical metrics from PL and EL, which implies well-aligned energy levels throughout the entire cell. Relatively large ideality factors and insufficient charge extraction, however, cause each a fill factor penalty of about 6% (absolute). Using partial device stacks, we then identify significant losses in standard perovskite subcells due to bulk and interfacial recombination. Lastly, we present strategies to minimize these losses using triple halide (CsFAPb(IBrCI)(3)) based perovskites. Our results give helpful feedback for device development and lay the foundation toward advanced perovskite/silicon tandem PVs capable of exceeding 33% PCE.…
MetadatenAuthor details: | Felix LangORCiDGND, Eike Köhnen, Jonathan WarbyORCiDGND, Ke Xu, Max GrischekORCiD, Philipp Wagner, Dieter NeherORCiDGND, Lars KorteORCiD, Steve Albrecht, Martin StolterfohtORCiDGND |
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DOI: | https://doi.org/10.1021/acsenergylett.1c01783 |
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ISSN: | 2380-8195 |
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Title of parent work (English): | ACS Energy Letters |
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Publisher: | American Chemical Society |
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Place of publishing: | Washington |
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Publication type: | Article |
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Language: | English |
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Date of first publication: | 2021/10/22 |
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Publication year: | 2021 |
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Release date: | 2024/06/11 |
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Volume: | 6 |
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Issue: | 11 |
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Number of pages: | 10 |
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First page: | 3982 |
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Last Page: | 3991 |
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Funding institution: | Alexander von Humboldt FoundationAlexander von Humboldt Foundation; Federal Ministry of Education and Research (BMBF)Federal Ministry of Education & Research (BMBF) [03SF0540]; Helmholtz Association within the project HySPRINT Innovation labHelmholtz Association; HyPerCells (University of Potsdam); HyPerCells (HelmholtzZentrum Berlin); Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)German Research Foundation (DFG) [423749265, 424709669 -SPP 2196]; Federal Ministry for Economic Affairs and Energy [03EE1017C] |
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Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
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DDC classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
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Peer review: | Referiert |
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License (German): | Keine öffentliche Lizenz: Unter Urheberrechtsschutz |
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