Alleviating nanostructural phase impurities enhances the optoelectronic properties, device performance and stability of cesium-formamidinium metal–halide perovskites

Author:

Othman Mostafa1,Jeangros Quentin2,Jacobs Daniel A.1,Futscher Moritz H.3ORCID,Zeiske Stefan4,Armin Ardalan4ORCID,Jaffrès Anaël1,Kuba Austin G.1ORCID,Chernyshov Dmitry5ORCID,Jenatsch Sandra6ORCID,Züfle Simon6ORCID,Ruhstaller Beat6,Tabean Saba78,Wirtz Tom78,Eswara Santhana78ORCID,Zhao Jiashang9,Savenije Tom J.9ORCID,Ballif Christophe12,Wolff Christian M.1ORCID,Hessler-Wyser Aïcha1

Affiliation:

1. Ecole Polytechnique Fédérale de Lausanne (EPFL), Institute of Electrical and Micro Engineering (IEM) Photovoltaics and Thin-Film Electronics Laboratory (PV-Lab), Neuchâtel, Switzerland

2. Centre d’Electronique et de Microtechnique (CSEM), Rue Jaquet-Droz 1, 2000, Neuchâtel, Switzerland

3. Laboratory for Thin Films and Photovoltaics, Empa – Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland

4. Sustainable Advanced Materials (Ser-SAM), Department of Physics, Swansea University, Swansea SA2 8PP, UK

5. Swiss-Norwegian Beamlines at the European Synchrotron Radiation Facility, 71 Avenue des Martyrs, F-38000, Grenoble, France

6. Fluxim AG, Katharina-Sulzer-Platz 2, Winterthur, 8400, Switzerland

7. Advanced Instrumentation for Nano-Analytics (AINA), Luxembourg Institute of Science and Technology (LIST), Materials Research and Technology Department, 41 Rue du Brill, Belvaux L-4422, Luxembourg

8. University of Luxembourg, 2 Avenue de l’Université, Esch-sur-Alzette L-4365, Luxembourg

9. Department of Chemical Engineering, Delft University of Technology, Delft, The Netherlands

Abstract

The impact of the composition of the A-site cations on the intra-domain defect density in cesium-formamidinium perovskite formulations is modulated via alloying.

Funder

H2020 Marie Skłodowska-Curie Actions

Nederlandse Organisatie voor Wetenschappelijk Onderzoek

Fonds National de la Recherche Luxembourg

Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

Bundesamt für Energie

Publisher

Royal Society of Chemistry (RSC)

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