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  • Francesca De Rossi
    University of Rome Tor Vergata
  • Jérémy Barbé
    Swansea University
  • David M. Tanenbaum
    Pomona College, Claremont, California
  • Lucio Cinà
    Cicci Research s.r.l
  • Luigi Angelo Castriotta
    University of Rome Tor Vergata
  • Vasil Stoichkov
    Swansea University
  • Zhengfei Wei
    Swansea University
  • Wing Chung Tsoi
    Swansea University
  • Jeffrey Kettle
  • Artem Sadula
    MCAST Energy Research Group
  • John Chircop
    MCAST Energy Research Group
  • Brian Azzopardi
    MCAST Energy Research Group
  • Haibing Xie
    Catalan Institute of Nanoscience and Nanotechnology
  • Aldo Di Carlo
    University of Rome Tor Vergata
  • Monica Lira-Cantú
    Catalan Institute of Nanoscience and Nanotechnology
  • Eugene A. Katz
    Swiss Institute for Dryland Environmental and Energy Research
  • Trystan M. Watson
    Swansea University
  • Francesca Brunetti
    University of Rome Tor Vergata
Comparisons between different laboratories on long‐term stability analyses of perovskite solar cells (PSCs) is still lacking in the literature. This work presents the results of an interlaboratory study conducted between five laboratories from four countries. Carbon‐based PSCs are prepared by screen printing, encapsulated, and sent to different laboratories across Europe to assess their stability by the application of three ISOS aging protocols: (a) in the dark (ISOS‐D), (b) under simulated sunlight (ISOS‐L), and (c) outdoors (ISOS‐O). Over 1000 h stability is reported for devices in the dark, both at room temperature and at 65 °C. Under continuous illumination at open circuit, cells survive only for few hours, although they recover after being stored in the dark. Better stability is observed for cells biased at maximum power point under illumination. Finally, devices operate in outdoors for 30 days, with minor degradation, in two different locations (Barcelona, Spain and Paola, Malta). The findings demonstrate that open‐circuit conditions are too severe for stability assessment and that the diurnal variation of the photovoltaic parameters reveals performance to be strongly limited by the fill factor, in the central hours of the day, due to the high series resistance of the carbon electrode.

Keywords

  • carbon, interlaboratory studies, ISOS protocols, long-term stability, perovskite solar cells
Original languageEnglish
Article number2000134
JournalEnergy technology
Volume8
Issue number12
Early online date29 Apr 2020
DOIs
Publication statusPublished - Dec 2020

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