Altowyan, Abeer S.Coban, M. B.Kaynar, U. H.Hakami, JabirCin, E. AymilaKaynar, S. CamAyvacikli, M.2025-03-202025-03-2020240272-88421873-3956https://doi.org/10.1016/j.ceramint.2024.04.135https://hdl.handle.net/20.500.14034/2458A series of Tb3+, Li+ co-doped ZnO phosphors were prepared using a precipitation method. X-ray diffraction (XRD) analysis indicated the successful incorporation of Tb3+ into the ZnO lattice. The influence of Tb3+ doping content and Li+ charge compensator on the photoluminescence (PL) properties of ZnO:Tb3+ was investigated. Under UV excitation, emissions corresponding to electron transitions 5D4 -> 7FJ (J = 0,1,2,3,4,5,6) were observed from Tb3+ ions, including an unusual emission transition at 673 nm, which significantly enriches our understanding of Tb3+ luminescence. The critical concentration quenching of Tb3+ in ZnO:Tb3+ occurs at 7 mol%, as explained by the Van Uitert equation, which attributes this phenomenon to dipole-dipole interactions. Surprisingly, incorporating Li+ for charge balancing led to a reduction in the luminescence intensity of ZnO:7 mol% Tb3+, x%Li+ phosphors (x = 0.01 and 0.07) at 544 nm. This reduction highlights an increased degree of lattice distortion due to Li+ inclusion. Furthermore, CIE chromaticity analysis showed that the optimal doping concentration of 0.07 Tb3+ shifted the color coordinates towards vivid green, with a color temperature of approximately 6241 K, indicating of neutral white light.eninfo:eu-repo/semantics/closedAccessZnOTb3+Li plus . photoluminescenceconcentration quenchingArticle10.1016/j.ceramint.2024.04.13550132403624044Q1WOS:0012424351000012-s2.0-85190559564Q1