The ionic conductivity of a halide perovskite can be boosted by light. This may be detrimental for perovskite solar cells, but also holds promise for solid-state photoelectrochemical devices.
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Fleig, J., Kubicek, M. Light may harm or help. Nature Mater 17, 389–391 (2018). https://doi.org/10.1038/s41563-018-0052-2
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DOI: https://doi.org/10.1038/s41563-018-0052-2
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