Scientific Reports 4, Article number: 5294 (2014); Published: 18 June 2014; Updated: 16 January 2015
This Article contains an error in figure 5. Data from figure 1b is duplicated in figure 5e.
The correct figure 5 appears below as figure 1.

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The online version of the original article can be found at 10.1038/srep05294
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Qu, D., Zheng, M., Zhang, L. et al. Correction: Corrigendum: Formation mechanism and optimization of highly luminescent N-doped graphene quantum dots. Sci Rep 5, 7998 (2015). https://doi.org/10.1038/srep07998
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DOI: https://doi.org/10.1038/srep07998