Characteristics of Strontium Aluminate Crystals Used for Long-Duration Phosphors

Sr3Al2O6, SrAl2O4, SrAl4O7, and SrAl12O19 that have been doped with Eu2+ and Dy3+ ions have been grown by a floating‐zone technique for application as long‐duration phosphors. Long‐duration phosphorescence with a variety of colors has been observed in SrAl2O4, SrAl4O7, and SrAl12O19 crystals that ha...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 1998-02, Vol.81 (2), p.413-416
Main Authors: Katsumata, Tooru, Sasajima, Kazuhito, Nabae, Takehiko, Komuro, Shuji, Morikawa, Takitaro
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Other solid inorganic materials
Photoluminescence
Physics
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Summary:Sr3Al2O6, SrAl2O4, SrAl4O7, and SrAl12O19 that have been doped with Eu2+ and Dy3+ ions have been grown by a floating‐zone technique for application as long‐duration phosphors. Long‐duration phosphorescence with a variety of colors has been observed in SrAl2O4, SrAl4O7, and SrAl12O19 crystals that have been doped with Eu2+ and Dy3+ ions. The peak wavelength of the phosphorescence is 520 nm for SrAl2O4, 480 nm for SrAl4O7, and 400 nm for SrAl12O19. The phosphorescence is characterized by decay times that have been analyzed by a curve‐fitting technique.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1998.tb02349.x