In situ Study of Perovskite Thin Film Growth
2024-02-06

In situ Study of Perovskite Thin Film GrowthNada Mrkyvkova a, b, Vladimir Held a, Peter Nadazdy b, Karol Vegso b, Quentin Guesnay c, Daming Zheng d, Frank Schreiber e, Peter Siffalovic a, ba Center for Advanced Materials Application, Slovak Academy of Sciences, Dúbravská cesta 9, 845 11 Bratislava, Slovakiab Institute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 11 Bratislava, Slovakiac Ecole Polytechnique Fédérale de Lausanne (EPFL), Institute of Electrical and Microengineering (IEM), 10 Photovoltaics and Thin-Film Electronics Laboratory, Neuchâtel, Switzerlandd Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris (IRCP), UMR8247, 11 rue P. et M. Curie, F-75005 Paris, Francee Institute of Applied Physics, University of Tübingen, 72076 Tübingen, GermanyInternational Conference on Hybrid and Organic PhotovoltaicsProceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV24)València, Spain, 2024 May 12th - 15thOrganizer: Bruno EhrlerOral, Nada Mrkyvkova, presentation 176DOI: https://doi.org/10.29363/nanoge.hopv.2024.176Publication date: 6th February 2024Hybrid halide-perovskites are considered a material with high potential in optoelectronics, especially for light-emitting diodes and solar cells. Perovskite-based solar cells (PSCs) are a promising substitute for commercially used silicon solar cells. Nowadays, the power conversion efficiency of PSCs reaches over 25 % [1]. However, further increase of the PSCs performance is limited by defects located at the layer interfaces and grain boundaries in the case of widely used polycrystalline thin films [2, 3]. Understanding and controlling the formation and evolution of perovskite phases is critical to reducing trap state density, thereby enhancing solar cell efficiency. The in situ studies have shown their significance in revealing the pathways and intermediary mechanisms that affect the resulting properties of the final PSCs. In this work, we show simultaneous measurement of in situ grazing-incidence wide-angle X-ray scattering (GIWAXS) and photoluminescence (PL) to study the structural and optoelectronic properties of perovskite films during their formation. We used these in situ techniques for perovskite deposited by various methods, such as spin-coating (in a nitrogen atmosphere), chemical vapor deposition, and vacuum deposition. Despite different formation conditions, all perovskite layers exhibit the non-monotonous character of the PL intensity with initial PL increase and subsequent quenching, indicating the defective state formation correlated with the crystalline structure changes observed by GIWAXS. These studies contributed to developing passivation and additive strategies to improve the films' structural, morphological, and optoelectronic properties and move beyond spin-coating with scalable techniques. References:[1] Chart of Best Research-Cell Efficiencies Provided by NREL.[2] T. S. Sherkar, C. Momblona, L. Gil-Escrig, J. Ávila, M. Sessolo, H. J. Bolink, and L. J. A. Koster: Recombination in Perovskite Solar Cells: Significance of Grain Boundaries, Interface Traps, and Defect Ions. ACS Energy Letters 2017, 2, 1214[3] F. Wang, S. Bai, W. Tress, A. Hagfeldt, and F. Gao: Defects engineering for high-performance perovskite solar cells. npj Flex. Electron. 2, 22 (2018).Acknowledgements:This work was supported by SK-CZ-RD-21-0043, APVV-21-0297, 2023/727/PVKSC, and ITMS 313021T081. © FUNDACIO DE LA COMUNITAT VALENCIANA SCITOnanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. 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