Martin Stolterfoht, Max Grischek, Pietro Caprioglio, Christian Michael Wolff, Emilio Gutierrez-Partida, Francisco Peña-Camargo, Daniel Rothhardt, Shanshan Zhang, Meysam Raoufi, Jakob Wolansky, Mojtaba Abdi-Jalebi, Samuel D. Stranks, Steve Albrecht, Thomas Kirchartz, Dieter Neher
- Perovskite photovoltaic (PV) cells have demonstrated power conversion efficiencies (PCE) that are close to those of monocrystalline silicon cells; however, in contrast to silicon PV, perovskites are not limited by Auger recombination under 1-sun illumination. Nevertheless, compared to GaAs and monocrystalline silicon PV, perovskite cells have significantly lower fill factors due to a combination of resistive and non-radiative recombination losses. This necessitates a deeper understanding of the underlying loss mechanisms and in particular the ideality factor of the cell. By measuring the intensity dependence of the external open-circuit voltage and the internal quasi-Fermi level splitting (QFLS), the transport resistance-free efficiency of the complete cell as well as the efficiency potential of any neat perovskite film with or without attached transport layers are quantified. Moreover, intensity-dependent QFLS measurements on different perovskite compositions allows for disentangling of the impact of the interfaces and the perovskitePerovskite photovoltaic (PV) cells have demonstrated power conversion efficiencies (PCE) that are close to those of monocrystalline silicon cells; however, in contrast to silicon PV, perovskites are not limited by Auger recombination under 1-sun illumination. Nevertheless, compared to GaAs and monocrystalline silicon PV, perovskite cells have significantly lower fill factors due to a combination of resistive and non-radiative recombination losses. This necessitates a deeper understanding of the underlying loss mechanisms and in particular the ideality factor of the cell. By measuring the intensity dependence of the external open-circuit voltage and the internal quasi-Fermi level splitting (QFLS), the transport resistance-free efficiency of the complete cell as well as the efficiency potential of any neat perovskite film with or without attached transport layers are quantified. Moreover, intensity-dependent QFLS measurements on different perovskite compositions allows for disentangling of the impact of the interfaces and the perovskite surface on the non-radiative fill factor and open-circuit voltage loss. It is found that potassium-passivated triple cation perovskite films stand out by their exceptionally high implied PCEs > 28%, which could be achieved with ideal transport layers. Finally, strategies are presented to reduce both the ideality factor and transport losses to push the efficiency to the thermodynamic limit.…
MetadatenAuthor details: | Martin StolterfohtORCiDGND, Max GrischekORCiD, Pietro CaprioglioORCiDGND, Christian Michael WolffORCiDGND, Emilio Gutierrez-PartidaGND, Francisco Peña-CamargoORCiDGND, Daniel RothhardtORCiD, Shanshan Zhang, Meysam Raoufi, Jakob Wolansky, Mojtaba Abdi-Jalebi, Samuel D. Stranks, Steve Albrecht, Thomas KirchartzORCiDGND, Dieter NeherORCiDGND |
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DOI: | https://doi.org/10.1002/adma.202000080 |
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ISSN: | 0935-9648 |
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ISSN: | 1521-4095 |
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Title of parent work (English): | Advanced Materials |
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Subtitle (English): | Perovskite semiconductors with an implied efficiency exceeding 28% |
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Publisher: | Wiley-VCH |
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Place of publishing: | Weinheim |
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Publication type: | Article |
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Language: | English |
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Date of first publication: | 2020/03/12 |
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Publication year: | 2020 |
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Release date: | 2024/03/11 |
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Tag: | non-radiative interface recombination; perovskite solar cells; photoluminescence |
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Volume: | 32 |
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Issue: | 17 |
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Article number: | 2000080 |
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Number of pages: | 10 |
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First page: | 1 |
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Last Page: | 10 |
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Funding institution: | Deutsche Forschungsgemeinschaft. Grant Number: 423749265; Royal Society and Tata Group. Grant Number: UF150033; Engineering and Physical Sciences Research. Grant Number: EP/R023980/1; Federal Ministry of Education and Research; Materialforschung fuer die Energiewende. Grant Number: 03SF0540 |
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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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| 6 Technik, Medizin, angewandte Wissenschaften / 66 Chemische Verfahrenstechnik / 660 Chemische Verfahrenstechnik |
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Peer review: | Referiert |
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Publishing method: | Open Access / Hybrid Open-Access |
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License (German): | CC-BY - Namensnennung 4.0 International |
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External remark: | Zweitveröffentlichung in der Schriftenreihe Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe ; 1434 |
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