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Kochi, Japan

Sato S.,Niigata University | Kamei S.,Niigata University | Uematsu K.,Niigata University | Ishigaki T.,Niigata University | And 5 more authors.
Journal of Ceramic Processing Research | Year: 2013

Eu-activated Mg-Y-Si-O-N glass and MgYSi2O5N phosphors were prepared by a conventional solid-state reaction method. The samples were sintered at 1573-1673 K for 2 h in NH3 atmosphere. MgYSi2O5N phosphors show red emission at 611 nm. On the other hand, emissions of Mg-Y-Si-O-N glass phosphors were shifted from blue (at about 450 nm) to yellow (at about 550 nm) with increasing concentration of Eu ions. The different luminescent characteristics between MgYSi2O5N and Mg-Y-Si-O-N glass are ascribed to different valence of doped Eu ions respectively. Source


Sato S.,Niigata University | Kamei S.,Niigata University | Uematsu K.,Niigata University | Ishigaki T.,Niigata University | And 5 more authors.
Journal of Ceramic Processing Research | Year: 2013

Rare earth doped Na3AlP3O9N oxynitridophosphate phosphors were prepared by a conventional solid-state reaction method. The samples were sintered at 1073 K for 6 h in NH3 atmosphere. Eu doped samples show blue emission due to the 4f65d1 → 4f7 transition of Eu2+. When Eu concentration was 1 mol%, the emission intensity was the highest in Eu doped samples. The Tbdoped samples showed green emission at about 550 nm doe to the 5D4 → 7F5 transition of Tb3+. Source

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