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 ,
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.
