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Effect of composition variation on phases and photoluminescence properties of β-SiAlON:Ce3+ phosphor

Authors :
Gan, Lin
Mao, Zhi-Yong
Zhang, Yu-Qiang
Xu, Fang-Fang
Zhu, Ying-Chun
Liu, Xue-Jian
Source :
Ceramics International. May2013, Vol. 39 Issue 4, p4633-4637. 5p.
Publication Year :
2013

Abstract

Abstract: Ce3+-doped β-SiAlON blue phosphors with composition of Ce x Si6−z Al z O z N8−z (0.2≤z≤4) at a fixed x=0.01 were synthesized by the gas pressure sintering method. The phases and photoluminescence properties were found to be directly correlated to the z value. Higher z value would result in the formation of AlN polytypoid impurity phases. The optimal z value resides in the range 0.3≤z≤0.5, by which high purity of β-SiAlON phase, good crystallinity and fine grain size were obtained, leading to the best luminescence properties. These phosphors could be a good candidate for application in white light-emitting diodes using InGaN-based near–ultraviolet chips. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
02728842
Volume :
39
Issue :
4
Database :
Academic Search Index
Journal :
Ceramics International
Publication Type :
Academic Journal
Accession number :
85815800
Full Text :
https://doi.org/10.1016/j.ceramint.2012.10.202