For As in ZAs02_3 and Sb in ZSb01_3 samples c=0.003-0.005. For n V =2 this gives estimate of the shift of Raman peak 𝛥𝛥𝛥𝛥 𝐴𝐴 1 = (0.9 -1.4) 𝑐𝑐𝑐𝑐 -1 . This estimate is in qualitative agreement with experiment but smaller than observed difference in Raman shifts of the A 1 (TO) mode in samples doped with As and Sb compared to the undoped sample. (inset in Fig. ). Better agreement corresponds to n V =3.4-5.3. Thus, the Raman spectroscopy data are consistent with the creation of two Zn vacancies by Sb or As substitution. Substitution of Zn by Sb or As and creation of Zn vacancies should produce local vibration modes. Such effect was observed in . We suppose that the intensity of such modes in our samples is at least 200 times smaller (ratio of Sb or As atom concentration to Zn atom concentration) than intensity of ZnO peaks. This is below the sensitivity of our Raman spectrometer.