Correction to: Research of optical absorption and luminescence spectra of double-perovskite calcium tungstate co-doped with Yb³⁺/Ho³⁺

Correction to: J Mater Sci: Mater Electron (2018) 29:1146–1152 https://doi.org/10.1007/s10854-017-8017-9

The original version of this article unfortunately contained a typo in the Fig. 4 caption. The unit “Er³⁺” should read as “Ho³⁺” in the caption of Fig. 4.