Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1461670 | Ceramics International | 2013 | 5 Pages |
Abstract
Eu2+ ion doped β-sialon (Si6−zAlzOzN8−z:xEu2+) phosphors were prepared from pyrophyllite-based mixtures by a carbothermal reduction and nitridation method first. Then, the effects of z values and the Eu concentration on the structure and the photoluminescence (PL) properties were investigated. β-Sialon was successfully synthesized as a dominant phase even at the low temperature of 1500 °C, while Si3N4 and AlN weakly coexisted as secondary phases. The PL excitation spectra exhibited the broad spectra covering up to 500 nm, and the greenish-yellow emission was observed at around 580 nm. At z=1 and x=0.012, excellent emission intensity could be attained.
Related Topics
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Materials Science
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Authors
Kukhyun Jun, Kigang Lee, Gunha Kim, Young Jin Kim,