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The Effect of Boron on Processing and Phosphorescence Behavior of SrAl4O7 (SA2) Co-doped with Eu2+ and Dy3+

Published online by Cambridge University Press:  08 April 2011

Murat G. Eskin,
Hasan Kurt,
Mehmet Ali Gulgun and
Cleva W. Ow-Yang
Murat G. Eskin
Affiliation:
Faculty of Engineering and Natural Sciences, Sabanci University, Orhanli, Tuzla, Istanbul, 34956, TURKEY.
Hasan Kurt
Affiliation:
Faculty of Engineering and Natural Sciences, Sabanci University, Orhanli, Tuzla, Istanbul, 34956, TURKEY.
Mehmet Ali Gulgun
Affiliation:
Faculty of Engineering and Natural Sciences, Sabanci University, Orhanli, Tuzla, Istanbul, 34956, TURKEY.
Cleva W. Ow-Yang
Affiliation:
Faculty of Engineering and Natural Sciences, Sabanci University, Orhanli, Tuzla, Istanbul, 34956, TURKEY.
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Abstract

SrAl4O7 (SA2) phosphor powders were synthesized by using a modified Pechini process. Varying amounts of boron was incorporated into the SA2 lattice to investigate the effects on crystal structure and optical properties. X-ray spectra showed that boron addition enhances phase purity of the powder at a calcination temperature of 1000 °C, whereas the formation of a new S4A7 phase was induced when a calcination temperature of 1100 °C was used. The afterglow duration was extended to longer than 5 hours when boron was present in 4-11 mol%. To elucidate the enhanced optical properties, interband trap characteristics were studied by thermoluminescence and photoluminescence.

Keywords

Bluminescencex-ray diffraction (XRD)

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1309: Symposium EE – Solid-State Chemistry of Inorganic Materials VIII , 2011, mrsf10-1309-ee03-28
Copyright
Copyright © Materials Research Society 2011

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References

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