Title of article
The origin of bimodal luminescence of β-SiAlON:Eu2+ phosphors as revealed by fluorescence microscopy and cathodoluminescence analysis
Author/Authors
Gan، نويسنده , , Xue-Lin and Mao، نويسنده , , Zhiyong and Zeng، نويسنده , , Xiong-Hui and Zhang، نويسنده , , Yuqiang and Zhao، نويسنده , , Yang and Xu، نويسنده , , Fangfang and Zhu، نويسنده , , Yingchun and Liu، نويسنده , , Xue-Jian، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2014
Pages
5
From page
205
To page
209
Abstract
Eu2+-doped SiAlON phosphors with the composition of EuxSi6−zAlzOzN8−z (0.5 ≤ z ≤ 3) at a fixed x = 0.01 were synthesized by the gas pressure sintering method. Dependence of luminescence properties on the phase compositions in β-SiAlON:Eu2+ phosphors has been examined via fluorescence microscope and scanning electron microscope equipped with a cathodoluminescence spectrometer and an energy dispersive spectrometer. Bimodal emission (green and violet) from β-SiAlON phase is observed in the samples with z ≥ 2, indicating co-existence of two different kinds of coordination for Eu2+ ions in the host lattice.
Keywords
A. Optical materials , D. Luminescence , C. Electron microscopy
Journal title
Materials Research Bulletin
Serial Year
2014
Journal title
Materials Research Bulletin
Record number
2104996
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