Luminescence Property of Eu2+ Doped Strontium Silicate Yellow Phosphor for White Light Emitting Diode
Eu2+ activated strontium silicate (Sr3SiO5(:)Eu2+) yellow phosphor was prepared by the conventional solid-state reaction technique in reduction atmosphere with starting materials SrCO3,SiO2 and Eu2O3.The phase,morphology and luminescence property of the samples were analyzed.The X-ray diffraction analysis showed the main phase in all samples is tetragonal Sr3SiO5.With Eu2+ ions doped into the host lattice,the Sr3SiO5(:)Eu2+ phosphors absorb light energy in the UV-visible spectrum region and show an intense broad emission band in the yellow colour range (around 570 nm) and a weak band in the blue region (around 470 nm).The excitation and the emission bands are originated from the 4f-5d transition of Eu2+ ions.When the concentration of Eu2+ ions increases,the emission peaks of phosphors shift to longer wavelengths.The effective emission in the yellow colour indicates that phosphor as potential candidates for white light-emitting-diodes.
White Light-Emitting-Diode (LED) Sr3SiO5∶Eu2+ phosphor Luminescence property
Hong He Renli Fu Xiufeng Song Deliu Wang
College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,P.R.China
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
363-365
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）