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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.
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页码:549 / 555
页数:7
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