Eu 2 + -doped Ca-α-SiAlON: A yellow phosphor for white light-emitting diodes
2004; American Institute of Physics; Volume: 84; Issue: 26 Linguagem: Inglês
10.1063/1.1767596
ISSN1520-8842
AutoresRong‐Jun Xie, Naoto Hirosaki, Ken Sakuma, Yoshinobu Yamamoto, Mamoru Mitomo,
Tópico(s)Inorganic Chemistry and Materials
ResumoIn this letter, a yellow oxynitride phosphor α-SiAlON with compositions of Ca0.625EuxSi0.75−3xAl1.25+3xOxN16−x (Ca-α-SiAlON:Eu, x=0–25) was prepared by gas pressure sintering. The diffuse reflection spectrum, photoluminescence spectrum, and chromaticity of the powder phosphors were presented. It absorbs light efficiently in the UV–visible spectral region, and shows a single intense broadband emission at 583–603nm. This phosphor may become a good candidate for creating white light, typically warm white light, when coupled to a blue light-emitting diode (λem=450nm).
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