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Luminescence of the near‐ultraviolet blue‐emitting Ba 9 Al 2 Si 6 O 24 :Ce 3+ phosphor
Author(s) -
Teng Yongfu
Publication year - 2021
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.3915
Subject(s) - phosphor , luminescence , analytical chemistry (journal) , materials science , ultraviolet , excitation , fluorescence , chemistry , optoelectronics , optics , physics , chromatography , quantum mechanics
A near‐ultraviolet (NUV) blue‐emitting phosphor Ba 9 Al 2 Si 6 O 24 :Ce 3+ (BAS:Ce 3+ ) was synthesized using a high‐temperature solid‐state reaction. BAS:Ce 3+ had an excitation band peak at about 328 nm and showed a blue emission band. The NUV‐blue emission band had a peak at about 386 nm with a band width of about 60 nm, attributed to the 5d–4f transition of Ce 3+ . Fluorescent decay showed an exponential model with a lifetime of 27.2 nsec. At 150°C, the luminescence intensity decreased to 68.7% compared with the intensity at room temperature.