The long Afterglow and Thermoluminescence Properties of MAl2O4 Eu2+, Dy3+(M=Ca, Sr and Ba) Phosphors Syntheized by Combustion Technique

Abstract:

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MAl2O4:Eu2+0.01, Dy3+0.02 (M=Ca, Sr and Ba) materials were synthesized by combustion method. X-ray powder diffraction (XRD) patterns indicate that all the samples are of high purity and crystallinity. The grain sizes of MAl2O4:Eu2+, Dy3+ are similar. The luminescent properties of phosphors were studied systematically. The main peaks of emission spectra of the luminescent phosphors changes from blue-purple to yellow-green and then to blue-green due to the different distortion existed in different host lattices. The decay time of phosphors varies a lot, and SrAl2O4:Eu2+, Dy3+ shows the best persistence characteristic. Thermoluminescence analysis indicates that the trap levels in MAl2O4:Eu2+, Dy3+ (M=Ca, Sr and Ba) are different, and the trap level in SrAl2O4 host is the most moderate to exhibit long afterglow at room temperature.

Info:

Periodical:

Advanced Materials Research (Volumes 197-198)

Edited by:

Huaiying Zhou, Tianlong Gu, Daoguo Yang, Zhengyi Jiang, Jianmin Zeng

Pages:

318-322

DOI:

10.4028/www.scientific.net/AMR.197-198.318

Citation:

W. Xie et al., "The long Afterglow and Thermoluminescence Properties of MAl2O4 Eu2+, Dy3+(M=Ca, Sr and Ba) Phosphors Syntheized by Combustion Technique", Advanced Materials Research, Vols. 197-198, pp. 318-322, 2011

Online since:

February 2011

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$35.00

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