Chin. Phys. Lett.  2013, Vol. 30 Issue (12): 127103    DOI: 10.1088/0256-307X/30/12/127103
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
Upconversion Emission Properties of Erbium- and Ytterbium-Doped Potassium Lithium Tantalate Niobate Ceramics
LI Lei1**, ZHOU Zhong-Xiang2, YANG Wen-Long2, LI Huan2, WU Ye2
1Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology, Hohai University, Changzhou 213022
2Department of Physics, Harbin Institute of Technology, Harbin 150001
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LI Lei, ZHOU Zhong-Xiang, YANG Wen-Long et al  2013 Chin. Phys. Lett. 30 127103
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Abstract

We investigate the luminescence properties of erbium-doped and erbium-ytterbium-codoped potassium lithium tantalate niobate ceramics prepared by the solid phasesyntheses method. The crystalline structure and surface morphology of these ceramics are tested by x-ray diffraction and scanning electron microscopy. The green, red, and near-infrared upconversion photoluminescence properties are analyzed by the steady-state spectra under 975 nm and 800 nm excitations. These ceramics arewell sintered and tetragonal tungsten type crystalline structure with the 4 mm point group and the P4bm space group. The Er3+ upconversion emission integrated intensities increase with theincrease in Er3+ ion concentration, while the green emissiondecreases with the increase in Yb3+ ion concentration under the 800 nm excitation. An effective energy back transfer process from the Er3+ 4S3/2 state to Yb3+ ground state plays an important role in enhancing the red emission and weakening the green emission.

Received: 18 June 2013      Published: 13 December 2013
PACS:  71.20.Eh (Rare earth metals and alloys)  
  77.84.Ek (Niobates and tantalates)  
  42.62.Fi (Laser spectroscopy)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/30/12/127103       OR      https://cpl.iphy.ac.cn/Y2013/V30/I12/127103
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LI Lei
ZHOU Zhong-Xiang
YANG Wen-Long
LI Huan
WU Ye

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