Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 489, Issue 1, Pages 157-161Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2009.09.042
Keywords
SiAlON; Luminescent materials; Powder processing; X-ray diffraction (XRD); Optical properties
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Funding
- JSPS of Japan [20900101]
- Hokkaido University
- Grants-in-Aid for Scientific Research [20900101] Funding Source: KAKEN
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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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