中文摘要：

采用高温固相反应方法在空气中制备了Sr2SiO4∶Dy^3＋发光材料。在365 nm紫外光激发下,测得Sr2SiO4∶Dy^3＋材料的发射光谱为一多峰宽谱,发射峰分别位于486,575和665 nm处。研究了电荷补偿剂Li^＋,Na^＋和K^＋对Sr2SiO4∶Dy^3＋材料发射光谱强度的影响,结果显示,不同电荷补偿剂下,随电荷补偿剂掺杂浓度的增大,Sr2SiO4∶Dy^3＋材料发射光谱强度的演化趋势相同,即,Sr2SiO4∶Dy^3＋材料发射峰强度先增大后减小,但不同电荷补偿剂下,材料发射峰强度最大处对应的补偿剂浓度不同,对应Li^＋,Na^＋和K^＋时,浓度分别为4 mol%,3 mol%和3 mol%。同时,对研究结果进行了理论分析。

英文摘要：

The Sr2SiO4∶Dy^3＋ phosphor was synthesized by the high temperature solid-state reaction method in air.Dy2O3（99.9%）,SiO2（99.9%）,SrCO3（99.9%）,Li2CO3（99.9%）,Na2CO3（99.9%） and K2CO3（99.9%） were used as starting materials,and the Dy^3＋ doping concentration was 2 mol%.The emission spectrum was measured by a SPEX1404 spectrophotometer,and all the characterization of the phosphors was conducted at room temperature.The emission spectrum of Sr2SiO4∶Dy^3＋ phosphor showed several bands centered at 486,575 and 665 nm under the 365 nm excitation.The effect of Li^＋,Na^＋ and K^＋ on the emission spectra of Sr2SiO4∶Dy^3＋ phosphor was studied.The results show that the location of the emission spectrum of Sr2SiO4∶Dy^3＋ phosphor was not influenced by Li^＋,Na^＋ and K^＋.However,the emission spectrum intensity was greatly influenced by Li^＋,Na^＋ and K^＋,and the evolvement trend was monotone with different charge compensation,i.e.the emission spectrum intensity of Sr2SiO4∶Dy^3＋ phosphor firstly increased with increasing Li^＋ concentration,then decreased.However the charge compensation concentration corresponding to the maximum emission intensity was different with different charge compensation,and the concentration is 4,3 and 3 mol% corresponding to Li^＋,Na^＋ and K^＋,respectively.And the theoretical reason for the above results was analyzed.