Luminescence Properties of Rare-Earth Co-Doped Phosphate Glasses for White Light Emitting Diodes

Abstract:

Ce³⁺/Tb³⁺/Sm³⁺ co-doped phosphate glasses were prepared by melt quenching method. The full colors including blue, green and reddish orange emitting were observed simultaneously in the photoluminescent spectra of the glasses at 377 nm excitation, and the combination of these three emitting allows the realization of white light emitting. The CIE chromaticity coordinate (x=0.339, y=0.331) of the emission from the glass is close to the standard white-light illumination (0.333, 0.333). Moreover, the tunable luminescent color and chromaticity parameters could be realized by varying the content of Tb₄O₇ dopant in the glass composition, which is promising fluorescent materials for white light emitting diodes applications.

• Periodical: Advanced Materials Research (Volumes 989-994)
• Pages: 369-372
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.989-994.369
• Online since: July 2014
• Authors: Guo Hua Chen*, Xiao Ling Kang, Yun Yang
• Keywords: Glass, Luminescence, Phosphor, White-Light-Emitting

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