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Understanding the mechanism of metal-induced degradation in perovskite nanocrystals

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Abstract

A deeper understanding of the perovskite–metal chemistry is crucial to elucidate the instability problems at the device level that can be caused by such interactions. Here, we study the reactions occurring between CsPbX3 (X = Br, BrI, I) perovskite and metal (M = Ag, Cu, Au) nanocrystals. We demonstrate a fast (<1 hour) optical and structural degradation of the I-containing nanocrystals driven by the formation of metal iodides with reaction kinetics according to the following order Cu < Ag < Au. These results point to the need for thoughtful considerations while constructing optoelectronic devices out of all-inorganic CsPbX3 nanocrystals, where the use of contact metals is a necessity.

Graphical abstract: Understanding the mechanism of metal-induced degradation in perovskite nanocrystals

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Publication details

The article was received on 24 Jul 2019, accepted on 25 Sep 2019 and first published on 25 Sep 2019


Article type: Paper
DOI: 10.1039/C9NR06328E
Nanoscale, 2019, Advance Article

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    Understanding the mechanism of metal-induced degradation in perovskite nanocrystals

    S. Saris, V. Niemann, V. Mantella, A. Loiudice and R. Buonsanti, Nanoscale, 2019, Advance Article , DOI: 10.1039/C9NR06328E

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