中文摘要：

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。

英文摘要：

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