TY - JOUR

T1 - An Interlaboratory Study on the Stability of All-Printable Hole Transport Material–Free Perovskite Solar Cells

AU - De Rossi, Francesca

AU - Barbé, Jérémy

AU - Tanenbaum, David M.

AU - Cinà, Lucio

AU - Castriotta, Luigi Angelo

AU - Stoichkov, Vasil

AU - Wei, Zhengfei

AU - Tsoi, Wing Chung

AU - Kettle, Jeffrey

AU - Sadula, Artem

AU - Chircop, John

AU - Azzopardi, Brian

AU - Xie, Haibing

AU - Di Carlo, Aldo

AU - Lira-Cantú, Monica

AU - Katz, Eugene A.

AU - Watson, Trystan M.

AU - Brunetti, Francesca

N1 - 12 month embargo at publication

PY - 2020/12

Y1 - 2020/12

N2 - 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.

AB - 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.

KW - carbon

KW - interlaboratory studies

KW - ISOS protocols

KW - long-term stability

KW - perovskite solar cells

U2 - 10.1002/ente.202000134

DO - 10.1002/ente.202000134

M3 - Article

VL - 8

JO - Energy technology

JF - Energy technology

IS - 12

M1 - 2000134

ER -