Effect of Sulfourea on Luminescent Properties of CaSrS2: Eu2+ by Combustion Method
The Eu<2+> doped red phosphor CaSrS2 was synthesized via the redox reaction of respective metal nitrates and sulfourea by combustion synthesis. A series of phosphor with different ration of sulfourea and the metallic nitrate were prepared and their luminescent properties were studied. The X-ray diffraction analysis (XRD) showed that they were pure crystalloid of CaSrS2, which belonged to cubic crystal structure. The scan electron microscope (SEM) patterns indicated that the size of CaSrS2 crystal would minish with the enhancing of the sulfourea quantity. The excitation spectra showed that there were a strong and two feebleness broad bands, which including two excitation peaks respectively. The emissions spectrum was a broad band from 560～700nm and the main peak located at 620nm, which was a pure red light. The luminescent intensity of samples changed with the increasing of sulfourea and the intensity would reach the maximum when the sulfourea was 2.5 times of the theory dosage. This is beneficial to promote the performance of luminescence.
red phosphor combustion synthesis sulfourea rare earths
Li Xu(李旭) Yang Zhiping(杨志平) Guan Li(关丽) Liu Chong(刘冲) Li Panlai(李盼来)
College of Physics Science and Technology, Hebei University, Baoding 071002,China College of Physics Science and Technology, Hebei University, Baoding 071002, China Graduate College, Hebei University, Baoding 071002, China
国际会议
第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)
包头
英文
297-300
2007-08-07（万方平台首次上网日期，不代表论文的发表时间）