Novel Reddish Yellow-emitting Ce3+-Doped Ba3Sc4O9 Phosphors for Blue-light-based White LEDs

Novel Reddish Yellow-emitting Ce3+-Doped Ba3Sc4O9 Phosphors for Blue-light-based White LEDs

Novel reddish yellow-emitting Ba3(Sc1−xCex)4O9 (0 ≤ x ≤ 0.01) phosphors were synthesized in a single-phase form by a conventional solid-state reaction method. These phosphors exhibited excellent optical absorption in the blue-light region and showed reddish yellow emission with a peak at 583 nm due...

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Veröffentlicht in:Chemistry letters 2014-06, Vol.43 (6), p.828-830
Hauptverfasser: Hasegawa, Takuya, Woog Kim, Sun, Ishigaki, Tadashi, Uematsu, Kazuyoshi, Takaba, Hiromitsu, Toda, Kenji, Sato, Mineo
Format: Artikel
Sprache:eng
Schlagworte:
Emission
Excitation
Optimization
Phosphors
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Beschreibung
Zusammenfassung:Novel reddish yellow-emitting Ba3(Sc1−xCex)4O9 (0 ≤ x ≤ 0.01) phosphors were synthesized in a single-phase form by a conventional solid-state reaction method. These phosphors exhibited excellent optical absorption in the blue-light region and showed reddish yellow emission with a peak at 583 nm due to the 5d → 4f transition of Ce3+ under excitation at 437 nm. By optimizing the Ce3+ concentration, the maximum emission intensity was obtained for Ba3(Sc0.999Ce0.001)4O9.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.140070