摘要
采用高温固相法合成Eu2+激活的碱土金属氯硅酸盐系荧光粉M7Mg2(SiO4)4C12:0.08Eu2+(M=Ca,Sr,Ba),研究了它们的荧光光谱。结果表明,3种荧光粉均为宽带激发,激发带位置分别在250～500nm、250～450nm、250～430nm。讨论了Eu2+离子的跃迁发射随基质组成的变化规律,随着Ca、Sr、Ba离子半径的依次增大,发射波长逐渐向短波方向移动,分别产生绿(507nm)、蓝(458、445nm)不同颜色的发射光。
The alkaline earth metal magnesium chlorosilicate MTMg2（SiO4）4Cl2：0.08Eu2＋（M=Ca,Sr, Ba） phosphors activated by Eu2＋ were synthesized by high-temperature solid-state reaction, and the luminescence properties of the phosphors were studied. Results show that all the three phosphors have broadband excitation spectra with ranges of 250-500 nm, 250-450 nm, 250-430 nm, respectively. The composition dependence of the radiation transitions of Eu2＋ in the host was discussed. The position of emission peak of Eu2＋ moved to short-wavelength and the phosphors emit green （507 nm） and blue （458 nm, 445 nm） light with increasing of radius size of Ca, Sr and Ba ions in sequence.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2010年第4期664-667,共4页
Rare Metal Materials and Engineering
基金
辽宁省教育厅基金(05L329)
沈阳市科技计划(10633070)
关键词
二价铕
氯硅酸盐
碱土金属
divalent europium
chlorosilicate
alkaline earth metals
