Microstructure investigation and multicolor upconversion in Yb3+/Ln3+(Ln=Er/Tm/Ho) ions doped α-Sialon

被引:1
|
作者
Sang Hoon Jeong [1 ]
Yuwaraj K.Kshetri [2 ]
Seung Ho Kim [2 ]
Sung Hun Cho [3 ]
Soo W.Lee [1 ]
机构
[1] Department of Environment and Bio-Chemical Engineering, Sun Moon University
[2] Research Center for Eco Multi-Functional Nano Materials, Sun Moon University
[3] The Institute of Scientific and Industrial Research (ISIR), Osaka University
基金
新加坡国家研究基金会;
关键词
α-Sialon; Hot press sintering; Upconversion; Energy transfer;
D O I
暂无
中图分类号
TQ174.75 [工业用陶瓷];
学科分类号
080503 ;
摘要
Yb3+/Ln3+(Ln=Er/Tm/Ho)-α-sialon ceramics were fabricated by hot press sintering technique.Their microstructure and luminescent properties were studied by XRD,EDS,HRTEM and photoluminescence measurements.The results showed that the sintered ceramics consisted ofα-Sialon with a trace amount ofβ-Sialon phase.The frequency upconversion and downconversion properties of Yb3+/Ln3+(Ln=Er/Tm/Ho)-α-Sialon ceramics were investigated under 980 nm low-power excitation.The different concentrations of Yb3+/Ln3+(Ln=Er/Tm/Ho)produced multicolor emissions characteristics of each Ln3+ion as a result of the energy transfer from Yb3+to Er3+,Tm3+and Ho3+ions.The EDS spectra measurements and mappings showed that the Ln3+ions were well incorporated in theα-Sialon matrix.Temporal evolution of the emission decay behavior has been investigated to understand the energy transfer mechanism.
引用
收藏
页码:549 / 555
页数:7
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