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http://dx.doi.org/10.18419/opus-14503
Autor(en): | Kulkarni, Ashish Sarkar, Ranjini Akel, Samah Häser, Maria Klingebiel, Benjamin Wuttig, Matthias Wiegand, Simone Chakraborty, Sudip Saliba, Michael Kirchartz, Thomas |
Titel: | A universal strategy of perovskite ink‐substrate interaction to overcome the poor wettability of a self‐assembled monolayer for reproducible perovskite solar cells |
Erscheinungsdatum: | 2023 |
Dokumentart: | Zeitschriftenartikel |
Seiten: | 14 |
Erschienen in: | Advanced functional materials 33 (2023), No. 2305812 |
URI: | http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-145226 http://elib.uni-stuttgart.de/handle/11682/14522 http://dx.doi.org/10.18419/opus-14503 |
ISSN: | 1616-3028 1616-301X |
Zusammenfassung: | Perovskite solar cells employing [4-(3,6-dimethyl-9H-carbazol-9-yl)butyl]phosphonic acid (Me-4PACz) self-assembled monolayer as the hole transport layer have been reported to demonstrate a high device efficiency. However, the poor perovskite wetting on Me-4PACz caused by poor perovskite ink interaction with the underlying Me-4PACz presents significant challenges for fabricating efficient perovskite devices. A triple co-solvent system comprising dimethylformamide (DMF), dimethyl sulfoxide (DMSO), and N-methyl-2-pyrrolidone (NMP) is employed to improve the perovskite ink-Me-4PACz coated substrate interaction and obtain a uniform perovskite layer. In comparison to DMF- and DMSO-based inks, the inclusion of NMP shows considerably higher binding energies of the perovskite ink with Me-4PACz as revealed by density-functional theory calculations. With the optimized triple co-solvent ratio, the perovskite devices deliver high power conversion efficiencies of >20%, 19.5%, and ≈18.5% for active areas of 0.16, 0.72, and 1.08 cm2, respectively. Importantly, this perovskite ink-substrate interaction approach is universal and helps in obtaining a uniform layer and high photovoltaic device performance for other perovskite compositions such as MAPbI3, FA1-xMAxPbI3-yBry, and MA-free FA1−xCsxPbI3-yBry. |
Enthalten in den Sammlungen: | 05 Fakultät Informatik, Elektrotechnik und Informationstechnik |
Dateien zu dieser Ressource:
Datei | Beschreibung | Größe | Format | |
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ADFM_ADFM202305812.pdf | 2,55 MB | Adobe PDF | Öffnen/Anzeigen |
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