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Synthesis of a Novel Bluish-Green Emitting Oxynitride Ca3Al8Si4O17N4:Eu2+ Phosphor in a CaAl4-xSixO7-xNx Solid Solution System

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DOI: 10.4236/opj.2013.36A006    3,612 Downloads   6,053 Views   Citations

ABSTRACT

Synthesis of oxynitride solid solutions CaAl4-xSixO7-xNx:Eu2+ (x = 0 - 4) was attempted by the solid state reaction (SSR) methods using Si3N4 and AlN as nitrogen sources. The Ca3Al8Si4O17N4 (x = 4/3) sample with the high phase purity was obtained when AlN was used as a nitrogen source whereas the sample synthesized using Si3N4 as another nitrogen source contained a Ca2Al2SiO7 impurity. Thus, it was revealed that AlN was a preferable nitrogen source for the synthesis of Ca3Al8Si4O17N4 by the SSR method. The solid solutions around x = 4/3 activated with Eu2+ exhibited bluish-green luminescence with emission maxima at 480 nm by the excitation at 250 - 450 nm. Thus, the CaAl4-xSixO7-xNx: Eu2+ solid solutions especially for Ca3Al8Si4O17N4:Eu2+ (x = 4/3) were developed as novel Eu2+

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

J. Kim, H. Kato, M. Kobayashi, Y. Sato and M. Kakihana, "Synthesis of a Novel Bluish-Green Emitting Oxynitride Ca3Al8Si4O17N4:Eu2+ Phosphor in a CaAl4-xSixO7-xNx Solid Solution System," Optics and Photonics Journal, Vol. 3 No. 6A, 2013, pp. 29-33. doi: 10.4236/opj.2013.36A006.

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