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A New Salt-Inclusion Single-Phased White Phosphor Ba7B3SiO13Br:Dy3+ for White Light-Emitting Diodes

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Abstract:

A series of Ba7B3SiO13Br:Dy3+ phosphors were synthesized by a conventional solid-state reaction method for the first time. The X-ray diffraction patterns confirmed that the samples were pure phase and crystallized in a hexagonal phase with a space group of the P63mc (186). The luminescence spectrum exhibited a strong blue emission band peaked at 478 nm, a strong yellow emission band at 575 nm and a weak emission band at 665 nm, corresponding to the transitions from 4F9/2 to 6H15/2, 6H13/2 and 6H13/2 of Dy3+, respectively. According to the emission spectrum of Ba6.92B3SiO13Br:0.08Dy3+ excited at 349 nm, the chromaticity coordinate was calculated to be (0.317, 0.358) located on the white light region. The concentration quenching mechanism of Dy3+ in Ba7B3SiO13Br was ascribed to the multipolar-multipolar interaction. The current researches suggested that the phosphor can be used as a white phosphor suitable for white light-emitting diodes.

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Advanced Materials Research IX View Preview

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Periodical:

Key Engineering Materials (Volume 803)

Pages:

93-97

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.803.93

Citation:

Cite this paper

Online since:

May 2019

Authors:

Hai Dong Ju*, Bao Ling Wang, Qi Mei Yang

Keywords:

Dy3+ Ions, LEDs, Single-Phased, White Phosphor

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* - Corresponding Author

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