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Issue 15, 2015
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Degradation observations of encapsulated planar CH3NH3PbI3 perovskite solar cells at high temperatures and humidity

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Abstract

The stability of encapsulated planar-structured CH3NH3PbI3 (MAPbI3) perovskite solar cells (PSCs) was investigated under various simulated environmental conditions. The tests were performed under approximately one sun (100 mW cm−2) illumination, varying temperature (up to 85 °C cell temperature) and humidity (up to 80%). The application of advanced sealing techniques improved the device stability, but all devices showed significant degradation after prolonged aging at high temperature and humidity. The degradation mechanism was studied by post-mortem analysis of the disassembled cells using SEM and XRD. This revealed that the degradation was mainly due to the decomposition of MAPbI3, as a result of reaction with H2O, and the subsequent reaction of hydroiodic acid, formed during MAPbI3 decomposition, with the silver back contact electrode layer.

Graphical abstract: Degradation observations of encapsulated planar CH3NH3PbI3 perovskite solar cells at high temperatures and humidity

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Publication details

The article was received on 16 Jan 2015, accepted on 05 Mar 2015 and first published on 09 Mar 2015


Article type: Paper
DOI: 10.1039/C5TA00358J
Author version available: Download Author version (PDF)
Citation: J. Mater. Chem. A, 2015,3, 8139-8147
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    Degradation observations of encapsulated planar CH3NH3PbI3 perovskite solar cells at high temperatures and humidity

    Y. Han, S. Meyer, Y. Dkhissi, K. Weber, J. M. Pringle, U. Bach, L. Spiccia and Y. Cheng, J. Mater. Chem. A, 2015, 3, 8139
    DOI: 10.1039/C5TA00358J

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