| |  Online-Ressource |
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| Verfasst von: | An, Qingzhi [VerfasserIn]  |
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| | Paulus, Fabian [VerfasserIn] |
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| | Becker-Koch, David [VerfasserIn] |
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| | Cho, Changsoon [VerfasserIn] |
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| | Sun, Qing [VerfasserIn] |
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| | Weu, Andreas [VerfasserIn] |
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| | Bitton, Sapir [VerfasserIn] |
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| | Tessler, Nir [VerfasserIn] |
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| | Vaynzof, Yana [VerfasserIn] |
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| Titel: | Small grains as recombination hot spots in perovskite solar cells |
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| Verf.angabe: | Qingzhi An, Fabian Paulus, David Becker-Koch, Changsoon Cho, Qing Sun, Andreas Weu, Sapir Bitton, Nir Tessler, Yana Vaynzof |
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| E-Jahr: | 2021 |
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| Jahr: | 24 March 2021 |
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| Umfang: | 19 S. |
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| Fussnoten: | Gesehen am 18.06.2021 |
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| Titel Quelle: | Enthalten in: Matter |
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| Ort Quelle: | Maryland Heights, MO : Cell Press, 2019 |
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| Jahr Quelle: | 2021 |
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| Band/Heft Quelle: | 4(2021), 5 vom: 5. Mai, Seite 1683-1701 |
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| ISSN Quelle: | 2590-2385 |
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| Abstract: | Non-radiative recombination in the perovskite bulk and at its interfaces prohibits the photovoltaic performance from reaching the Shockley-Queisser limit. While interfacial recombination has been widely discussed and demonstrated, bulk recombination and especially the influence of grain boundaries remain under debate. Most studies explore the role of grain boundaries on perovskite films rather than devices, making it difficult to link the film properties with those of the devices. Here, we systematically investigate the effects of grain boundaries on the performance of perovskite solar cells by two different methods. By combining experimental characterization with theoretical device simulations, we find that the recombination at grain boundaries is diffusion limited and hence is inversely proportional to the grain area to the power of 3/2. Consequently, the prevalence of small grains—which act as recombination hot spots—across the perovskite active layer dictates the photovoltaic performance of the perovskite solar cells. |
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| DOI: | doi:10.1016/j.matt.2021.02.020 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext ; Verlag: https://doi.org/10.1016/j.matt.2021.02.020 |
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| | Volltext: https://www.sciencedirect.com/science/article/pii/S2590238521000758 |
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| | DOI: https://doi.org/10.1016/j.matt.2021.02.020 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| Sach-SW: | bulk recombination |
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| | diffusion |
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| | grain boundaries |
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| | microstructure |
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| | modeling |
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| | non-radiative recombination |
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| | perovskite solar cells |
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| K10plus-PPN: | 1760794813 |
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| Verknüpfungen: | → Zeitschrift |
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Small grains as recombination hot spots in perovskite solar cells / An, Qingzhi [VerfasserIn]; 24 March 2021 (Online-Ressource)
