Lattice distortion effects induced by Li plus co-doping on ZnO:Tb3+phosphors: Photoluminescence and unusual hypersensitive 5D4 → 7F0 transition

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dc.contributor.authorAltowyan, AS
dc.contributor.authorCoban, MB
dc.contributor.authorKaynar, UH
dc.contributor.authorHakami, J
dc.contributor.authorÇin, EA
dc.contributor.authorKaynar, SC
dc.contributor.authorAyvacikli, M
dc.contributor.authorCan, N
dc.date.accessioned2025-04-10T10:36:42Z
dc.date.available2025-04-10T10:36:42Z
dc.description.abstractA 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.
dc.identifier.e-issn1873-3956
dc.identifier.issn0272-8842
dc.identifier.urihttp://hdl.handle.net/20.500.14701/42534
dc.language.isoEnglish
dc.titleLattice distortion effects induced by Li plus co-doping on ZnO:Tb3+phosphors: Photoluminescence and unusual hypersensitive 5D4 → 7F0 transition
dc.typeArticle

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