Eu^（2＋）和Mn^（2＋）在SrMgP_2O_7中的光致发光及其能量传递

Luminescence of Eu￣(2+) and Mn￣(2+) and Their Energy Transfer in SrMgP_2O_7

研究了Ｅｕ^（２＋）、Ｍｎ^（２＋）共激活的ＳｒＭｇＰ_２Ｏ_７的发光性质、浓度与荧光性质的关系。Ｅｕ^（２＋）和Ｍｎ^（２＋）的发射光谱分别在４００ｎｍ及６７０ｎｍ附近，它们是Ｅｕ^（２＋）的５ｄ－４ｆ跃迁和Ｍｎ^（２＋）的~４Ｔ_１（~４Ｇ）－~６Ａ_（１ｇ）（~６Ｓ）跃迁发射，实验结果表明：Ｅｕ^（２＋）对Ｍｎ^（２＋）的荧光发射有较强的敏化作用，Ｍｎ^（２＋）对Ｅｕ^（２＋）的荧光寿命和强度也有显著影响．

The fluorescence of Eu2+ and Mn2+ coactivated SrMgP2O7 was reported.The emission bands of Eu2+ and Mn2+ peaking at 400 nm and 670 nm were originated from 5d-4f transition of Eu2+ and 4T1(4G)-6Alg(6S) transition of Mn2+,respectively. The dependence ofEu2+ and Mn 2+ luminescence properties on their concentration was investigated.The emission of Mn 2+ is sensitized by Eu2+ and the fluorescence lifetime of Eu 2+ is affected by Mn2+.The experimental results indicate that there exists an effective energy transfer from Eu2+ to Mn2+ in SrMgP2O7 host.This energy transfer is due to the electric dipole-quadripole interaction of the resonance transfer.