文献类型：期刊文献

英文题名：Influence of Dy³⁺ coactivator on the luminescence properties of Gd₂O₂S:Tb³⁺ phosphor

作者：Wang, Fei[1,2];Liu, Dachun[1,2];Yang, Bin[1,2];Zhang, Jinchao[3];Dai, Yongnian[1,2]

机构：[1]Kunming Univ Sci & Technol, Natl Engn Lab Vacuum Met, Kunming 650093, Yunnan, Peoples R China;[2]Yunnan Prov Key Lab Nonferrous Vacuum Met, Kunming, Yunnan, Peoples R China;[3]E China Univ Sci & Technol, Dept Inorgan Mat, Shanghai 200237, Peoples R China

年份：2012

卷号：111

期号：2

外文期刊名：JOURNAL OF APPLIED PHYSICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000299792400001)】；

语种：英文

摘要：Gd2O2S:Tb, Dy phosphor were synthesized by co-precipitation method combined with solid-state reactions. The crystal structure and luminescent properties were investigated in this paper. It was confirmed that no new phase was introduced by the analysis of X-ray diffractions (XRD) and fluorescence spectroscopy. It was also illustrated that the lattice size was decreased by doping Dy3+ ions. The results showed that the Dy3+ coactivator had a remarkable influence on the spectral properties of the Gd2O2S:Tb phosphor and can be taken as rare earth ion detector to determine the micro-structure of phosphors. Especially the cross relaxation between Tb3+ and Dy3+ may take place to form the non-radiative energy transfer. Dy3+ as the coactivator added in Gd2O2S:Tb could enhance the luminescence and not disturb its other primary properties. With Dy3+ concentration increased, the intensity of F-4(9/2)-H-13/2 transition at 578 nm was increased further and the emission of D-5(4)-F-7(J) transition was highly improved to cause greener emission. (C) 2012 American Institute of Physics. [doi:10.1063/1.3676252]