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Issue 43, 2016
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Constructing water-resistant CH3NH3PbI3 perovskite films via coordination interaction

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Abstract

Organic–inorganic halide CH3NH3PbI3 (MAPbI3) perovskite solar cells (PSCs) have attracted intensive attention due to their high power conversion efficiency and low fabrication cost. However, MAPbI3 is known to be very sensitive to humidity, and the intrinsic long-term stability of the MAPbI3 film remains a critical challenge. 2-Aminoethanethiol (2-AET) was used as a ligand to bridge the organic compound (MAI) and inorganic compound (PbI2), which restricted the fast growth of PbI2 to realize the synchronous growth environment of MAI and PbI2 crystals, resulting in the formation of a compact MAPbI3 film with polygonal grains. Due to the compact (PbI2)–2-AET–(MAI) molecule barrier layers in the MAPbI3 structure, the resulting perovskite films showed excellent intrinsic water-resistance, with the MAPbI3 perovskite crystal structure retained for a long time (>10 minutes) after immersion in water. This work makes a step towards obtaining long-term stable MAPbI3 perovskite devices.

Graphical abstract: Constructing water-resistant CH3NH3PbI3 perovskite films via coordination interaction

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Publication details

The article was received on 12 Aug 2016, accepted on 28 Sep 2016 and first published on 10 Oct 2016


Article type: Paper
DOI: 10.1039/C6TA06892H
Citation: J. Mater. Chem. A, 2016,4, 17018-17024
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    Constructing water-resistant CH3NH3PbI3 perovskite films via coordination interaction

    B. Li, C. Fei, K. Zheng, X. Qu, T. Pullerits, G. Cao and J. Tian, J. Mater. Chem. A, 2016, 4, 17018
    DOI: 10.1039/C6TA06892H

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