Consensus statement for stability assessment and reporting for perovskite photovoltaics based on ISOS procedures

Abstract

Improving the long-term stability of perovskite solar cells is critical to the deployment of this technology. Despite the great emphasis laid on stability-related investigations, publications lack consistency in experimental procedures and parameters reported. It is therefore challenging to reproduce and compare results and thereby develop a deep understanding of degradation mechanisms. Here, we report a consensus between researchers in the field on procedures for testing perovskite solar cell stability, which are based on the International Summit on Organic Photovoltaic Stability (ISOS) protocols. We propose additional procedures to account for properties specific to PSCs such as ion redistribution under electric fields, reversible degradation and to distinguish ambient-induced degradation from other stress factors. These protocols are not intended as a replacement of the existing qualification standards, but rather they aim to unify the stability assessment and to understand failure modes. Finally, we identify key procedural information which we suggest reporting in publications to improve reproducibility and enable large data set analysis. Reliability of stability data for perovskite solar cells is undermined by a lack of consistency in the test conditions and reporting. This Consensus Statement outlines practices for testing and reporting stability tailoring ISOS protocols for perovskite devices.

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Affiliated Institutions

• University of Southern Denmark DK
• Suzhou Institute of Nano-tech and Nano-bionics CN
• Friedrich Schiller University Jena DE
• University of Cambridge GB
• Technical University of Darmstadt DE
• Universidade Estadual de Campinas (UNICAMP) BR
• Swansea University GB
• Yonsei University KR
• Karlsruhe Institute of Technology DE
• University of California, Davis US
• Boğaziçi University TR
• University of Oxford GB
• CEA LITEN FR
• University of Colorado Boulder US
• École Polytechnique Fédérale de Lausanne CH
• Wuhan University of Technology CN
• Dalian National Laboratory for Clean Energy CN
• Bangor University GB
• Fluxim (Switzerland) CH
• Chulalongkorn University TH
• Université Grenoble Alpes FR
• University of Maryland, College Park US
• University of Rome Tor Vergata IT
• Wrocław Technology Park PL
• Chinese Academy of Sciences CN
• Friedrich-Alexander-Universität Erlangen-Nürnberg DE
• Massachusetts Institute of Technology US
• Helmholtz-Zentrum Berlin für Materialien und Energie DE
• Helmholtz Institute Erlangen-Nürnberg DE
• Princeton University US
• University of Michigan US
• Imperial College London GB
• Joint Research Centre IT
• Skolkovo Institute of Science and Technology RU
• Vrije Universiteit Amsterdam NL
• Forschungszentrum Jülich DE
• Holst Centre (Netherlands) NL
• Commonwealth Scientific and Industrial Research Organisation AU
• Sungkyunkwan University KR
• Institut Català de Nanociència i Nanotecnologia ES
• Ben-Gurion University of the Negev IL
• Dalian Institute of Chemical Physics CN
• National Renewable Energy Laboratory US
• Commissariat à l'Énergie Atomique et aux Énergies Alternatives FR

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