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Correction to: Nature Communications 10.1038/s41467-017-01339-0, published online 30 October 2017.
The original version of this Article contained two errors in Fig. 2h, in which the photoluminescence spectra curve of the “PVK:OXD-7” was plotted incorrectly and the figure legends were incorrectly given. The correct version is:
which replaces the previous incorrect version:
This has now been corrected in both the PDF and HTML versions of the Article.
