文献类型：期刊文献

英文题名：Optical properties and energy transfer behavior from Tb3+ to Mn2+ ions in co-doped zinc strontium phosphate glasses

作者：Liang, Xiaoluan[1]; Xing, Zhongwen[2]; Liu, Yinyao[1]; Xu, Weina[1]; Yang, Yunxia[1]; Chen, Guorong[1]

机构：[1] Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China; [2] Department of Materials Science and Engineering, Nanjing University, Nanjing 210093, China

年份：2011

卷号：130

期号：1-2

起止页码：346

外文期刊名：Materials Chemistry and Physics

收录：EI(收录号：20113714327483)

语种：英文

外文关键词：Rare earths - Zinc compounds - Transition metals - Optical properties - Emission spectroscopy - Metal ions - Glass - Manganese oxide - Paramagnetic resonance - Strontium compounds

摘要：In this paper, we report optical properties and energy transfer behavior between Tb and Mn in zinc strontium phosphate glasses. Electron Paramagnetic Resonance spectra indicate a stronger hyperfine interaction of Mn 2+-Mn2+ pairs with higher MnO concentrations. The co-existence of Tb3+ and Mn2+ ions in glasses is clearly evident in the transmittance spectra. Emission spectra show an obvious energy transfer from Tb3+ to Mn2+ ions in glasses. Based on Dexter's energy transfer formula and Reisfeld's approximation, the energy transfer mechanism was postulated to proceed via a dipolar-quadrupole interaction. The energy transfer carries out with resonant and cross-relaxation transfer modes with the understanding of Tb3+ and Mn2+ energy level diagrams. The decreasing in mean-duration time (τ mean) of Tb3+ ions obtained from the decay curves make a further evidence of energy transfer from Tb3+ to Mn2+ ions in glasses. ? 2011 Elsevier B.V. All rights reserved.