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Issue 57, 2016, Issue in Progress
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Systematic study on the impact of water on the performance and stability of perovskite solar cells

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Abstract

The effects of water on the photovoltaic performance of methylammonium lead iodide perovskite devices has recently become a topic of interest within the perovskite community. However, existing studies report contrasting and sometimes contradictory observations. In this work, small concentrations of water, consistent with those present in air-exposed DMF, were systematically incorporated directly into the PbI2 precursor solution in order to investigate its effect on the performance of sequentially spin-coated, inverted perovskite solar cells. Increasing concentrations of water in the PbI2 solution were found to have a negative impact on photovoltaic performance. The addition of water was observed to exaggerate the scan-rate and directional-dependent hysteresis and introduce new transient behaviours in comparison to the “dry” devices. Interestingly, the addition of water was also found to improve the long-term device stability in comparison with devices fabricated from “dry” precursors.

Graphical abstract: Systematic study on the impact of water on the performance and stability of perovskite solar cells

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Publication details

The article was received on 03 May 2016, accepted on 19 May 2016 and first published on 25 May 2016


Article type: Paper
DOI: 10.1039/C6RA11379F
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RSC Adv., 2016,6, 52448-52458

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    Systematic study on the impact of water on the performance and stability of perovskite solar cells

    C. Clegg and I. G. Hill, RSC Adv., 2016, 6, 52448
    DOI: 10.1039/C6RA11379F

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