TITLE

Synthesis and photoluminescence characteristics of color-tunable BaY2ZnO5:Eu3+ phosphors

AUTHOR(S)
Liang, Chih-Hao; Chang, Yee-Cheng; Chang, Yee-Shin
PUB. DATE
November 2008
SOURCE
Applied Physics Letters;11/24/2008, Vol. 93 Issue 21, p211902
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Color-tunable phosphors of BaY2-xEuxZnO5 (x=0.001–0.9) were synthesized using a vibrating milled solid state reaction. The results indicate that the emission spectra of BaY2-xEuxZnO5 samples excited at 395 nm exhibit a series of shaped peaks assigned to the 5D0→7FJ (J=0,1,2,3,4) transitions. Luminescence from the higher excited states, such as 5D1, 5D2, and 5D3, were also observed even though the Eu3+ concentration was up to x=0.2. The chromaticity coordinate of BaY2-xEuxZnO5 phosphors varies with the Eu3+-doped concentrations from blue, white, to red, and which may be potentially applicable as a white light emitting phosphor for ultraviolet light emitting diodes.
ACCESSION #
35605057

 

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