Defect Passivation via Plasma Modification of Lead Halide Perovskite Thin Films
ABSTRACT The defects located at surface and grain boundaries are generally agreed to be the key factors limiting the power conversion efficiency and operational stability of the halide perovskite solar cells. Therefore, new techniques for surface and grain boundaries passivation are being continuously developed and studied. In this work, we investigate the impact of diffuse coplanar surface barrier discharge (DCSBD) nitrogen plasma treatment on the photoluminescence properties and performance of halide perovskite thin films in solar cells. We show that plasma exposure leads to an increase in photoluminescence, attributed to reduced defect densities, resulting in implied open‐circuit voltage improvement of up to 80 mV. Furthermore, solar cells fabricated with plasma‐treated layers exhibited open‐circuit gains up to 60 mV. These results demonstrate that, with careful optimization, DCSBD nitrogen plasma treatment is an effective method for enhancing the efficiency of perovskite solar cells. Moreover, it is an easily scalable and dry process, two factors that make it an ideal method for industrial applications.
Authors
- Aleš Vlk (ORCID: https://orcid.org/0000-0003-2866-7133)
- Tomáš Homola (ORCID: https://orcid.org/0000-0002-8522-6169)
- Lucie Landová (ORCID: https://orcid.org/0000-0002-5578-7344)
- Julius A. Vida (ORCID: https://orcid.org/0000-0002-3850-2896)
- Robert Hlaváč
- Jiří Fujera (ORCID: https://orcid.org/0000-0002-3561-8914)
- Martin Ledinský (ORCID: https://orcid.org/0000-0002-6586-5473)
- Swarnendu Banerjee (ORCID: https://orcid.org/0000-0002-8892-1757)
- Mostafa Othman (ORCID: https://orcid.org/0000-0001-6987-0176)
- Mykhailo Khytko (ORCID: https://orcid.org/0000-0003-4141-6101)
- Aïcha Hessler‐Wyser
- Christian Wolff
Institutions
- Masaryk University (CZ)
- Czech Academy of Sciences, Institute of Plasma Physics (CZ)
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ)
- École Polytechnique Fédérale de Lausanne (CH)
Publication Details
- Journal
- Progress in Photovoltaics Research and Applications
- Published
- 2026-02-17
- DOI
- https://doi.org/10.1002/pip.70075
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- European Commission
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
- Ministerstvo Školství, Mládeže a Tělovýchovy
- Grantová Agentura České Republiky
- Bundesamt für Energie