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Mitigation of Open‐Circuit Voltage Losses in Perovskite Solar Cells Processed over Micrometer‐Sized‐Textured Si Substrates

Farag, Ahmed 1,2; Fassl, Paul ORCID iD icon 1,2; Hu, Hang ORCID iD icon 1,2; Feeney, Thomas 1; Quintilla, Aina 3; Ruiz-Preciado, Marco A. 1,2; Hempel, Wolfram; Bagrowski, Dominik; Noack, Philipp; Wattenberg, Bianca; Dippell, Torsten; Paetzold, Ulrich W. ORCID iD icon 1,2
1 Lichttechnisches Institut (LTI), Karlsruher Institut für Technologie (KIT)
2 Institut für Mikrostrukturtechnik (IMT), Karlsruher Institut für Technologie (KIT)
3 Center for Functional Nanostructures (CFN), Karlsruher Institut für Technologie (KIT)

Abstract:

The recent development of solution-processed perovskite thin films over micrometer-sized textured silicon bottom solar cells enables tandem solar cells with power conversion efficiencies > 30%. Next to improved light harvesting, textured silicon wafers are the industrial standard. To achieve high performance, the open-circuit voltage losses that occur when fabricating perovskite solar cells over such textures need to be mitigated. This study provides a practical guideline to discriminate and address the voltage losses at the interfaces as well as in the bulk of solution-processed double cation perovskite thin films using photoluminescence quantum yield measurements. Furthermore, the origin of these losses is investigated via morphological, microstructural, and compositional analysis and present possible mitigation strategies. The guideline will be beneficial for scientists working on randomly textured surfaces and provides a deeper understanding on this timely research topic.


Verlagsausgabe §
DOI: 10.5445/IR/1000152780
Veröffentlicht am 17.11.2022
Originalveröffentlichung
DOI: 10.1002/ADFM.202210758
Scopus
Zitationen: 8
Web of Science
Zitationen: 7
Dimensions
Zitationen: 10
Cover der Publikation
Zugehörige Institution(en) am KIT Center for Functional Nanostructures (CFN)
Institut für Mikrostrukturtechnik (IMT)
Karlsruhe School of Optics & Photonics (KSOP)
Lichttechnisches Institut (LTI)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 16.01.2023
Sprache Englisch
Identifikator ISSN: 1616-301X, 1616-3028
KITopen-ID: 1000152780
HGF-Programm 38.01.02 (POF IV, LK 01) Materials and Interfaces
Erschienen in Advanced Functional Materials
Verlag Wiley-VCH Verlag
Band 33
Heft 3
Seiten Art.-Nr.: 2210758
Bemerkung zur Veröffentlichung This article also appears in: Hot Topic: Surfaces and Interfaces
Vorab online veröffentlicht am 14.11.2022
Nachgewiesen in Dimensions
Web of Science
Scopus
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