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Synthesis of the long-persistence phosphor CaAl2O4:Eu2+, Dy3+, Nd3+ by combustion method and its luminescent properties

✍ Scribed by Bo Zhang; Changliang Zhao; Donghua Chen

Publisher: John Wiley and Sons
Year: 2009
Tongue: English
Weight: 480 KB
Volume: 25
Category: Article
ISSN: 1522-7235
DOI: 10.1002/bio.1138

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✦ Synopsis

Calcium aluminate phosphor co-doped Eu 2+ + + + , Dy 3+ + + + , Nd 3+ + + + is prepared by the combustion method. We study systemically the influences of the quantity of mixed Dy 3+ + + + ion, the quantity of flux H 3 BO 3 , the differences in dispersing methods between magnetic stirring and ultrasonic dispersing and the combustion temperature on the long-persistence phosphor. The analytical results indicate that Dy 3+ + + + ion improves the properties of the phosphors CaAl 2 O 4 :Eu 2+ + + + , Nd 3+ + + + . The appropriate quantity of flux H 3 BO 3 to reduce the forming temperature of the sample was determined. The monoclinic single phase of CaAl 2 O 4 formed at 500°C and remained steady. The calcium aluminate co-doped Eu 2+ + + + , Dy 3+ + + + , Nd 3+ + +

was synthesized by dispersal of the raw material using the ultrasonic method, and it had better optical properties.

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