Luminescence enhancement of SrSi2O2N2 : Eu2 + phosphors by codoping with Ca2+,Zn2+ and Mn2+ ions
The oxonitride phosphors Sr1-ySi202N2 :yEu2+ have been prepared by solid state reaction. The effects of the activator concen tration and the overall composition of the host lattice on optical properties have been investigated.It has been demonstrated that the Eu2+ doped SrSi2O2N2 phosphor shows efficient green emission with peak at around 540 nm and the most intense emission can be obtained when y =0.04. The luminescent intensity of Eu2+is increased greatly with the codoping of Ca2+ ,Zn2+ or Mn2+. The phenomenon is analyzed and possible reasons are explained in terms of the different ion radius between Ca2+ ,Mn2+ ,Zn2+ and Sr2+.
LED phosphor ozonitride luminescence enhancement
WANG Iingli NI Haiyong XIAO Fangming
Institute of Rare Metals,Guangzhou Research Institute of Non-Ferrous Metals,Guangzhou 510651,China
国际会议
The 10th China-Russia System on Advanced Materials and Technologies(第十届中俄新材料新工艺研讨会)
浙江嘉兴
英文
468-470
2009-10-20（万方平台首次上网日期，不代表论文的发表时间）