N^＋(N=Li,Na,K)对发光材料M3(M=Ca,Sr,Ba)Y2(BO3)4：Eu^3＋光谱的影响  

Effect of N^+(N=Li,Na,K) on the Spectra of M_3(M=Ca,Sr,Ba)Y_2(BO_3)_4:Eu^(3+) Luminescent Phosphor

作　　者：李盼来[1] 王志军[1] 高慧颖[2] 杨志平[1] 

机构地区：[1]河北大学物理科学与技术学院,河北保定071002 [2]华北电力大学科技学院,河北保定071051

出　　处：《光谱学与光谱分析》2008年第11期2503-2506,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(10375015);河北省科学技术发展基金项目(51215103b);河北大学青年基金项目(2006Q06)资助

摘　　要：采用高温固相反应方法在空气中制备了M3(M=Ca,Sr,Ba)Y2(BO3)4∶Eu3+红色发光材料,测量结果显示,材料的主发射峰均位于613 nm处,监测613 nm发射峰时,所得材料的激发光谱相同。研究了Li+,Na+和K+对M3(M=Ca,Sr,Ba)Y2(BO3)4∶Eu3+材料激发与发射光谱的影响,结果显示,加入Li+,Na+和K+后,M3(M=Ca,Sr,Ba)Y2(BO3)4∶Eu3+材料的激发与发射光谱的峰值位置并不发生变化,但材料的激发与发射光谱的峰值强度均得到了不同程度的增强。在Li+,Na+和K+掺入浓度相同的条件下,研究发现,与加入Na+和K+时相比,加入Li+时,M3(M=Ca,Sr,Ba)Y2(BO3)4∶Eu3+材料的激发与发射光谱的峰值增强效果最明显。进而研究了Sr3Y2(BO3)4∶Eu3+材料发射峰强度随Li+掺杂浓度的变化情况,结果表明,随着Li+掺杂浓度的增大,Sr3Y2(BO3)4∶Eu3+材料发射峰强度先增大后减小,在Li+浓度为5 mol%时到达峰值,约为未掺杂时的两倍。The M3（M=Ca,Sr,Ba）Y2（BO3）4∶Eu3＋ red phosphor was synthesized by firing twice at 800 and 1 050 ℃ each for 4 h and 4 h in air,respectively. Y2O3（99.9%）,Eu2O3（99.9%）,H3BO3（99.9%）,CaCO3（99.9%）,SrCO3（99.9%）,BaCO3（99.9%）,Li2CO3（99.9%）,Na2CO3（99.9%） and K2CO3（99.9%） were used as starting materials,and the doping Eu3＋ concentration was 3 mol%.The excitation spectrum was measured by a SHIMADZU RF-540 ultraviolet spectrophotometer.The emission spectrum was measured by a SPEX1404 spectrophotometer.All the luminescence characteristics of the phosphors were investigated at room temperature.The emission spectrum of M3（M=Ca,Sr,Ba）Y2（BO3）4∶Eu3＋ phosphor exhibited a 613 nm red emission corresponding to the electric dipole 5D0-7F2 transition of Eu3＋ under 365 nm excitation.The excitation spectrum for 613 nm indicates that the phosphor can be effectively excited by ultraviolet（UV）（254,365 and 400 nm） and blue （470 nm） light.The effect of Li＋,Na＋ and K＋ on the excitation and emission spectra of M3（M=Ca,Sr,Ba）Y2（BO3）4∶Eu3＋ phosphor was studied.The results show that the location of the excitation and emission spectrum of M3（M=Ca,Sr,Ba）Y2（BO3）4∶Eu3＋ phosphor was not influenced by Li＋,Na＋ and K＋.However,the excitation and emission spectrum intensities were greatly influenced by Li＋,Na＋ and K＋,and the emission peak intensities were all enhanced.Under the condition of the same Li＋,Na＋ and K＋ concentration,the emission peak intensities of M3（M=Ca,Sr,Ba）Y2（BO3）4∶Eu3＋ phosphor were compared,and the result shows that the accretion effect of doping Li＋ is the best.The effect of Li＋ concentration on the emission peak intensity of Sr3Y2（BO3）4∶Eu3＋ phosphor was studied.The results show that the emission peak intensity firstly increased with the increasing Li＋ concentration,then decreased,and reached the maximum value at 5 mol% Li＋,and the maximum value is about twice as much as the Li-undoped on

关 键 词：M3(M=Ca Sr Ba)Y2(BO3)4∶Eu3+ 发射光谱 激发光谱 Li+ Na+ K+ 

分 类 号：O433[机械工程—光学工程]