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

来源：

Progress in Natural Science:Materials International | 2019年 / 29卷 / 05期

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：

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

页码：549 / 555

页数：7

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