Eu^2＋，Mn^2＋在BaZnP2O7中的发光及Eu^2＋→Mn^2＋能量传递  

Luminescence and energy transfer of Eu～(2+),Mn～(2+) in BaZnP_2O_7

作　　者：杨志平[1] 杨广伟[1] 王少丽[1] 田晶[2] 李盼来[1] 李旭[1] 

机构地区：[1]河北大学物理科学与技术学院,保定071102 [2]河北大学电子信息工程学院,保定071102

出　　处：《物理学报》2008年第1期581-585,共5页Acta Physica Sinica

基　　金：河北省科学技术发展基金(51215103b)资助的课题~~

摘　　要：采用高温固相法合成了BaZnP2O7:Eu2+,Mn2+荧光粉,并对其发光性质及Eu2+对Mn2+的能量传递机理进行了研究.Eu2+和Mn2+在380nm和670nm的发射峰分别由Eu2+的5d—4f跃迁和Mn2+的4T1(4G)—6A1(6S)跃迁产生.Eu2+对Mn2+的发光有很强的敏化作用,根据Dexter电多极相互作用的能量传递概率公式,判断出BaZnP2O7中Eu2+对Mn2+的能量传递属于电偶极-电四极相互作用引起的共振能量传递.The BaZnP2O7： Eu^2＋ , Mn^2＋ phosphor was synthesized by high temperature solid state reaction. The luminescence properties and the energy transfer between Eu^2＋ and Mn^2＋ were investigated. The emission bands of Eu^2 ＋ and Mn^2 ＋ peaking at 380 nm and 670 nm were originated from 5d-4f transition of Eu^2＋ which partly substituted the Ba^2＋ sites and ^4T1 （^4G）-^6A1（^6S） transition of Mn^2＋ occupying Zn^2＋ sites, respectively. The dependence of Eu^2＋ and Mn^2＋ luminescence properties on their concentration was investigated. With the increasing Mn^2＋ dopant content, the intensity of Eu^2＋ was observed to decrease, but the intensity of Mn^2＋ was simultaneously found to increase. It is suggested from this phenomenon that Mn^2＋ ion is sensitized by Eu^2＋ ion, in other words, there is an energy transfer from Eu^2＋ to Mn^2 ＋ in BaZnP2O7 host. According to the Dexter＇ s energy transfer formula of multipolar interaction, we have demonstrated that the energy transfer between Eu^2＋ and Mn^2＋ is due to the electric dipole-quadripole interaction of the resonance transfer.

关 键 词：磷酸盐 EU^2+ MN^2+ 能量传递 

分 类 号：O482.3[理学—固体物理]