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In this study, the effect of Zn doping on photoluminescence, Chromaticity and structural properties of Y₂O₃:Eu compound were studied. For this purpose, various Y₂O₃:Eu samples containing different Zn²⁺ concentration and distribution were prepared by combustion method. The resultant samples were characterized by X-ray diffractometry (XRD), Photoluminescence spectroscopy (PL) and scanning electron microscopy (SEM). The XRD patterns of samples were also examined by Rietveld refinement method and results showed that the samples had nano-sized crystallites. It has been also shown that doping of Zn²⁺ ion in structure of Y₂O₃:Eu compound can effectively enhance the PL intensity and chromaticity of Y₂O₃:Eu compound, while doping of Zn at surface of Y₂O₃:Eu powder reduces PL intensity, crystallinity and chromaticity of this compound.