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Suppressing generation of iodine impurity via an amidine additive in perovskite solar cells

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Abstract

In perovskite solar cells, I tends to oxidize to I2 due to its low redox potential. The generated I2 has been proved to be detrimental to device performance. Herein, for the first time, an amidine DBU is introduced as an additive into the precursor of the perovskite layer. The reductive DBU can suppress the formation of iodine impurity, resulting in a highly pure perovskite polycrystalline film. The efficiency and stability of the perovskite solar cells are thus improved.

Graphical abstract: Suppressing generation of iodine impurity via an amidine additive in perovskite solar cells

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Publication details

The article was received on 23 Mar 2018, accepted on 05 Apr 2018 and first published on 05 Apr 2018


Article type: Communication
DOI: 10.1039/C8CC02329H
Citation: Chem. Commun., 2018, Advance Article
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    Suppressing generation of iodine impurity via an amidine additive in perovskite solar cells

    L. Hu, T. Liu, L. Sun, S. Xiong, F. Qin, X. Jiang, Y. Jiang and Y. Zhou, Chem. Commun., 2018, Advance Article , DOI: 10.1039/C8CC02329H

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