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NaLaP 2 O 7 and NaGdP 2 O 7 powder samples are prepared by solid-state reactions at 750 and 600°C, respectively, and the VUV-excited luminescence properties of Ln 3+ (Ln=Ce, Pr, Tb, Tm, Eu) in both diphosphates are studied. Ln 3+ ions in both hosts show analogous luminescence. For Ce 3+ -doped samples, the five Ce 3+ 5d levels can be...
Spectroscopic properties of Ce 3+ and Pr 3+ -doped AREP 2 O 7 -type alkali rare earth diphosphates (A=Na, K, Rb, Cs; RE=Y, Lu) have been investigated using VUV spectroscopy technique. Ce 3+ -doped samples show typical Ce 3+ emission in the range of 325–450nm. The strong host absorption band starting at around 160nm indicates that the optical band gap...
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