Correction to: Nature Nanotechnology https://doi.org/10.1038/s41565-020-0717-2, published online 29 June 2020.

In the version of this Article originally published, in the sentence beginning “We also found that the PL intensity...”, the values of the laser fluence (in W µm–2) were incorrect: ‘8 × 104’ and ‘5 × 105’ should have been ‘8 × 10–4’ and ‘5 × 10–5’, respectively. Furthermore, in the units of the x-axis labels of Extended Data Fig. 4 and Supplementary Fig. 6, ‘105’ should have been ‘10–5’. The online versions of the Article have been amended and the Supplementary Information file has been replaced.