The z value dependence of photoluminescence in Eu2+-doped β-SiAlON (Si6-zAlzOzN8-z) with 1 ≤ z ≤ 4

JOURNAL OF ALLOYS AND COMPOUNDS

卷:489

Article

Zhu, X. W.¹  Masubuchi, Y.¹  Motohashi, T.¹  Kikkawa, S.¹ 

[1] Hokkaido Univ, Grad Sch Engn, Kita Ku, Sapporo, Hokkaido 0608628, Japan

关键词: SiAlON;    Luminescent materials;    Powder processing;    X-ray diffraction (XRD);    Optical properties;   

DOI  :  10.1016/j.jallcom.2009.09.042

来源: Elsevier

【 摘 要 】

Eu2+-doped beta-SiAlON (Si6-zAlzOzN8-z) phosphors with 1 <= z <= 4 were synthesized by gas pressure sintering. The emission spectra exhibit two broad bands with maxima at about 415 nm (violet) and 540 nm (green) under ultraviolet excitation. The green emission is dominant at z <= 2, while the violet emission becomes dominant at z > 2. The combination of two emission bands in a compound could lead to a white emission in Eu2+-doped beta-SiAlON with 2 < z <= 3. (c) 2009 Elsevier B.V. All rights reserved.

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