Iodine Migration and its Effect on Hysteresis in Perovskite Solar Cells

The migration and accumulation of iodide ions create a modulation of the respective interfacial barriers causing the hysteresis in solar cells based on methylammonium lead iodide perovskites. Iodide ions are identified as the migrating species by measuring temperature dependent current‐transients an...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2016-03, Vol.28 (12), p.2446-2454
Main Authors: Li, Cheng, Tscheuschner, Steffen, Paulus, Fabian, Hopkinson, Paul E., Kießling, Johannes, Köhler, Anna, Vaynzof, Yana, Huettner, Sven
Format: Article
Language:English
Subjects:
Hysteresis
Iodides
ion migration
mehtylammonium lead Iodide
Migration
Modulation
perovskite solar cells
Perovskites
Photovoltaic cells
Solar cells
Spectroscopy
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Summary:The migration and accumulation of iodide ions create a modulation of the respective interfacial barriers causing the hysteresis in solar cells based on methylammonium lead iodide perovskites. Iodide ions are identified as the migrating species by measuring temperature dependent current‐transients and photoelectron spectroscopy. The involved changes in the built‐in potential due to ion migration are directly measured by electroabsorption spectroscopy.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201503832