| Title: |
Unveiling the Impact of C60–O2 Interaction on the Performance and Characterization of Perovskite Solar Cells |
| Authors: |
Zimmermann, Lea; Menzel, Dorothee; Gundermann, Richard; Simmonds, Maxim; Scheler, Florian; Gries, Thomas; Nandayapa, Edgar; Castro Mendez, Andres Felipe; Mathies, Florian; Miaskiewicz, Aleksandra; List‐Kratochvil, Emil J. W.; Holzhey, Philippe; Musiienko, Artem; Lang, Felix; Korte, Lars; Köhnen, Eike; Albrecht, Steve |
| Publisher Information: |
Humboldt-Universität zu Berlin |
| Publication Year: |
2025 |
| Collection: |
Open-Access-Publikationsserver der Humboldt-Universität: edoc-Server |
| Subject Terms: |
C60; non‐radiative recombination; oxygen; perovskite solar cells; SnOx; 050 Allgemeine fortlaufende Sammelwerke; 600 Technik und Technologie; ddc:050; ddc:600 |
| Description: |
C60 is the prevalent electron‐transport layer (ETL) in high‐efficiency p‐i‐n perovskite single‐junction and multi‐junction solar cells. Here, it is demonstrated that the exposure of the C60 ETL to ambient O2 results in significantly increased non‐radiative recombination, influencing results from commonly applied characterization techniques such as steady‐state and transient photoluminescence (PL), transient surface photovoltage, as well as current density‐voltage measurements. Based on PL and He‐I UV photoemission spectroscopy measurements and supported by density functional theory calculations and drift‐diffusion simulations, it is proposed that O2 rapidly intercalates into the C60 ETL, causing the formation of deep trap states and an altered charge carrier balance at the perovskite/C60 interface. The findings reveal that the effect is reversible but can mislead experimental interpretations if disregarded, emphasizing the importance of O2 management during device fabrication and characterization. Furthermore, it is demonstrated that this interaction enables simple PL measurements in air to serve as a novel sensing method for evaluating the barrier layer quality of the SnOx buffer layer atop C60. This study thereby not only highlights a critical deterioration mechanism in perovskite solar cells and provides a deeper understanding of the underlying interaction between the C60 ETL and O2 but also offers practical avenues for future selective contact optimizations. ; “SHAPE” funded by the Federal Ministry of Economy and Climate Action (BMWK) ; “Supertandem” funded by the European Union's Horizon Europe research and innovation program ; Peer Reviewed |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
https://doi.org/10.18452/34916 |
| DOI: |
10.18452/34916 |
| DOI: |
10.1002/aenm.202501225 |
| Availability: |
http://edoc.hu-berlin.de/18452/35562; https://nbn-resolving.org/urn:nbn:de:kobv:11-110-18452/35562-7; https://doi.org/10.18452/34916; https://doi.org/10.1002/aenm.202501225 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.5A23D7D1 |
| Database: |
BASE |