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Achieving Efficient Red-Emitting Sr(2)Ca(1-delta)Ln(delta)WO(6):Mn4+ (Ln = La, Gd, Y, Lu, delta = 0.10) Phosphors with Extraordinary Luminescence Thermal Stability for Potential UV-LEDs Application via Facile Ion Substitution in Luminescence-Ignorable Sr2
dc.creator | Li, Kai | |
dc.creator | Du, Jiaren | |
dc.creator | Poelman, Dirk | |
dc.creator | Vrielinck, Henk | |
dc.creator | Mara, Dimitrije | |
dc.creator | Van Deun, Rik | |
dc.date.accessioned | 2023-06-01T10:22:01Z | |
dc.date.available | 2023-06-01T10:22:01Z | |
dc.date.issued | 2020 | |
dc.identifier.issn | 2639-4979 | |
dc.identifier.uri | https://riofh.iofh.bg.ac.rs/handle/123456789/733 | |
dc.description.abstract | In this work, we adopt a facile rare earth ions Ln(3+) (Ln = La, Gd, Y, Lu) substitution strategy to achieve the efficient red luminescence Sr(2)Ca(1-delta)Ln(delta)WO(6):Mn4+ (delta = 0.10), which extremely improves the luminescence properties of luminescence-ignorable Sr2CaWO6:Mn4+. It is demonstrated that the substitution of Ln(3+) for Ca2+ can stabilize the Mn in tetravalent state, which would like to occupy W6+ site and generate the luminescence. It is also found that the emission profile of original Sr2CaWO6:Mn4+ changes manifestly after different Ln(3+) ions substitution, which is mainly attributed to the synergistic effect of lattice distortion, Mn4+ transition E-2(g) -> (4)A(2g) and lattice vibration. Most fascinatingly, the Sr(2)Ca(0.9)Ln(0.1)WO(6):0.005Mn(4+) (SC(0.9)Ln(0.1)WO:0.005Mn(4+), Ln = La, Gd) show extraordinary luminescence thermal stability, whose integrated emission intensity still maintains about 95% (Gd, 96.8%; La, 94.8%) at 478 K of its original value at room temperature (298 K), much better than those in most reported M4+-activated oxide phosphors so far. It is confirmed that the traps may play an important role for this phenomenon. Best of all, this work gives us a facile strategy to achieve efficient Mn4+-activated red-emitting materials with extraordinary luminescence thermal stabilities derived from luminescence-ignorable ones. | en |
dc.relation | Ghent University's Special Research Fund (BOF) [BOF16/PDO/159] | |
dc.rights | restrictedAccess | |
dc.source | ACS Materials Letters | |
dc.title | Achieving Efficient Red-Emitting Sr(2)Ca(1-delta)Ln(delta)WO(6):Mn4+ (Ln = La, Gd, Y, Lu, delta = 0.10) Phosphors with Extraordinary Luminescence Thermal Stability for Potential UV-LEDs Application via Facile Ion Substitution in Luminescence-Ignorable Sr2 | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 778 | |
dc.citation.issue | 7 | |
dc.citation.other | 2(7): 771-778 | |
dc.citation.rank | M21 | |
dc.citation.spage | 771 | |
dc.citation.volume | 2 | |
dc.identifier.doi | 10.1021/acsmaterialslett.0c00212 | |
dc.identifier.rcub | conv_852 | |
dc.identifier.scopus | 2-s2.0-85088043117 | |
dc.identifier.wos | 000548457500014 | |
dc.type.version | publishedVersion |