文献类型：期刊文献

英文题名：Eu²⁺ and Mn²⁺ codoped Ba₂Mg(BO₃)₂-new red phosphor for white LEDs

作者：Yuan, Shuanglong[1,2];Yang, Yunxia[1];Zhang, Xianghua[1,2];Tessier, Franck[2];Chevire, Francois[2];Adam, Jean-Luc[2];Moine, Bernard[3];Chen, Guorong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]Univ Rennes 1, CNRS, UMR Sci Chim Rennes 6226, Lab Verres & Ceram, F-35042 Rennes, France;[3]Univ Lyon 1, CNRS, UMR 5620, Lab Physicochim Mat Luminescents, F-69622 Villeurbanne, France

年份：2008

卷号：33

期号：23

起止页码：2865

外文期刊名：OPTICS LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000262206500049)】；

基金：This work was supported by the National Natural Science Foundation of China (NNSFC) through grant 50572027 and by the Shanghai Leading Academic Discipline Project, project B502.

语种：英文

摘要：A new red phosphor, Ba2Mg(BO3)(2): Eu, Mn, was synthesized by the solid-state reaction method and its photolumineseence properties were investigated by excitation and emission spectra and decay curves. Its excitation band is extending from 250-450 nm, which is adaptable to the emission band of near-ultraviolet LED chips (350-420 nm). Upon the excitation of 365 nm light, the phosphor exhibits strong red emission centered at 615 nm. The relationship between Eu2+ and Mn2+ dopants was studied from the viewpoint of a crystal structure and by photolumineseence spectra and decay curves. The results show that the characteristic Eu2+ emission predominate in the emission band and Mn2+ promote the redistribution of Eu2+ at the cation sites of the host crystal. (C) 2008 Optical Society of America