研究了 M3 L a(BO3 ) 3 (M=Ca,Sr,Ba)基质中 Eu3 + 的激发光谱和发射光谱。结果表明 ,最强激发峰均为 394 nm,并均有λ<30 0 nm的较强电荷迁移带 ;按 Ca— Sr— Ba的顺序 ,各发射峰峰值逐渐红移 ;Eu3 + 的最佳发射浓度分别为 x Eu3 + =0 .10、0 .0 9、0 .2 0 ;Eu3 +的 5D0 → 7F2 跃迁发射的浓度猝灭机理分别为电偶极 -四极、电偶极 -偶极和电偶极 -偶极相互作用 The excitation and emission spectra of Eu3 + in M3 L a (BO3) 3 (M = Ca, Sr, Ba) matrix were investigated. The results show that the strongest excitation peak is 394 nm, and both have strong charge transfer bands of λ <30 0 nm. According to the sequence of Ca-Sr-Ba, the emission peaks shift red gradually; the emission of Eu3 + The concentration quenching mechanism of the emission of 5D0 → 7F2 at Eu3 + = 0. 10,0 .0 9,0. 2 0 and Eu3 + are respectively: dipole-quadrupole, dipole-dipole Electric dipole-dipole interaction