Correction to: Upconversion luminescence properties of ZnO:Yb³⁺,Er³⁺ prepared by hydrothermal method

Correction to: Journal of Materials Science: Materials in Electronics https://doi.org/10.1007/s10854-018-9645-4

The original version of this article contained an error in figure.

Figure 7 was inadvertently submitted wrongly and published in the original article. The corrected version of Fig. 7 is given below. The figure caption will remain the same as in the original article. This has been corrected with this erratum.

Fig. 7

UCPL spectra of ZnO:Yb³⁺,Er³⁺ with different doped concentrations