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In Situ TEM Analysis of Organic–Inorganic Metal-Halide Perovskite Solar Cells under Electrical Bias

descriptionPublicationkeyboard_double_arrow_right Article , Journal 31 Oct 2016 Switzerland Publisher:American Chemical Society (ACS)Journal:Nano Letters, volume 16, pages 7,013-7,018 (issn: 1530-6984, eissn: 1530-6992,

Authors: Jeangros, Quentin; Duchamp, Martial; Werner, Jeremie; Kruth, Maximilian; Dunin-Borkowski, Rafal E.; Niesen, Bjoern; Ballif, Christophe; +1 Authors

doi: 10.1021/acs.nanolett.6b03158

pmid: 27775887

In Situ TEM Analysis of Organic–Inorganic Metal-Halide Perovskite Solar Cells under Electrical Bias

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Abstract

Changes in the nanostructure of methylammonium lead iodide (MAPbI3) perovskite solar cells are assessed as a function of current-voltage stimulus by biasing thin samples in situ in a transmission electron microscope. Various degradation pathways are identified both in situ and ex situ, predominantly at the positively biased MAPbI3 interface. Iodide migrates into the positively biased charge transport layer and also volatilizes along with organic species, which triggers the nucleation of PbI2 nanoparticles and voids and hence decreases the cell performance.

Country

Switzerland

Related Organizations

University of Basel
Switzerland
Ernst Ruska Centre
Germany
Forschungszentrum Jülich
Germany
École Polytechnique Fédérale de Lausanne EPFL
Switzerland
Helmholtz Association of German Research Centres
Germany

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Keywords

Characterization, microstructure, perovskite solar cell, photovoltaics, in situ transmission electron microscopy, degradation

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