J Mater Sci (2018) 53:11355 https://doi.org/10.1007/s10853-018-2465-3

In the original article Fig. 3 and supplemental Figure s3 were incorrect. The correct version of Figure 3 follows and the Electronic Supplementary Material has been updated to include the correct supplemental figure.

Fig. 3
figure 3

TEM, STEM and HRTEM images of the a, b Ag2Se nanocrystals and cj Ag2Se@Ag2S nanocrystals prepared by using the single-step co-injection protocol with adopting various S to Se precursor ratios: c, d S/Se = 1:3 (CS-1), e, f S/Se = 1:1 (CS-2), g, h S/Se = 3:1(CS-3), i, j S/Se = 7:1 (CS-4). The scale bars of the STEM images inserted in a, c, e, g, i are 2.0 nm