Uncovering the Nanoscopic Humidity Ingression in Multifunctional Addivated Halide Perovskites
Abstract Sulfur‐based multifunctional additives are attractive for increasing not only the device power conversion efficiency but also the moisture stability of perovskite solar cells. The stability of the device against external and internal stress plays a pivotal role in the commercial endeavor of emerging technologies such as perovskite photovoltaics. However, the potential of sulfur‐based additives remains largely unexplored for perovskite solar cell fabrication. Here, a mechanism is deduced for the local nanoscopic humidity ingression into a multifunctional additiviated formamidinium‐loaded halide perovskites. By tuning the iodide and bromide tails of the additives, the influence of sulfur heteroatom containing ammonium‐amidinium salts on the photo‐physical and device properties of a formamidinium‐rich perovskite absorber is uncovered. In addition, the process of strong water adsorption is excluded through the proton‐migration mechanism, thereby significantly improving the moisture resistance of perovskite films. The high crystallinity and long lifetime decay allow a higher PCE of 25.14% to be achieved compared to the control at 22.49%, along with improved long‐term stability by retaining 99.6% of the initial PCE after 1000 h.
Authors
- Xiaotang Shi
- Dario M. Bassani (ORCID: https://orcid.org/0000-0002-9278-1857)
- Samrana Kazim (ORCID: https://orcid.org/0000-0003-2684-2209)
- Junyi Huang (ORCID: https://orcid.org/0000-0002-1423-7944)
- Xiongjie Li (ORCID: https://orcid.org/0000-0003-3193-8643)
- Rüdiger Berger (ORCID: https://orcid.org/0000-0002-4084-0675)
- Muhammed P. U. Haris (ORCID: https://orcid.org/0009-0000-6545-4781)
- Thierry Buffeteau (ORCID: https://orcid.org/0000-0001-7848-0794)
- Shahzada Ahmad (ORCID: https://orcid.org/0000-0002-1218-2556)
- Wang Dong (ORCID: https://orcid.org/0009-0005-6150-5082)
- Zhiguo Zhang (ORCID: https://orcid.org/0000-0002-8490-0182)
Institutions
- Ikerbasque (ES)
- Centre National de la Recherche Scientifique (FR)
- King Fahd University of Petroleum and Minerals (SA)
- Université de Bordeaux (FR)
- Basque Center for Materials, Applications and Nanostructures (ES)
- Institut des Sciences Moléculaires (FR)
- Max Planck Institute for Polymer Research (DE)
- Wuhan National Laboratory for Optoelectronics (CN)
- Institut Polytechnique de Bordeaux (FR)
- Donostia International Physics Center (ES)
- Huazhong University of Science and Technology (CN)
Publication Details
- Journal
- Advanced Energy Materials
- Published
- 2024-11-28
- DOI
- https://doi.org/10.1002/aenm.202403248
- Citations
- 3
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.63
Funders
- National Science Foundation
- Ministerio de Ciencia, Innovación y Universidades
- European Commission
- Agence Nationale de la Recherche
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation
- Ministerio de Ciencia e Innovación
- Conseil Régional Aquitaine
- Horizon 2020 Framework Programme
- Chinese Government Scholarship
- Agencia Estatal de Investigación
- H2020 European Research Council