Abstract: Green-emitting phosphors of lanthanum borophosphate doped with Ce³⁺,Tb³⁺ and Gd³⁺ have been prepared using BPO₄ and rare earth oxides. The spectroscopic properties of Ce³⁺,Tb³⁺ and Gd³⁺ and interaction among them in lanthanum borophosphate have been studied. There exist three kinds of energy transfer of Ce³⁺→Gd³⁺, Gd³⁺→Tb³⁺ and Ce³⁺→Tb³⁺ . The addition of Gd³⁺ to lanthanum borophosphate doped with Ce³⁺, Tb³⁺ leads to a decrease in Ce³⁺ emission intensity, a sharp increase in ⁵D₄→⁷F_J emission intensity of Tb³⁺ and no obvious change in ⁵D₃→⁷F_J emission intensity, which is in favor of enhancing intensity and purity of green emission. Compared with lanthanum borophosphate, gadolinium borophosphate used as the matrix material enhances intensity and purity of luminescence, as well as the x value of chromatic coordinates. So the phosphors of La(BO₃,PO₄):Ce,Tb,Gd and Gd(BO₃,PO₄):Ce,Tb are the desired materials with green emission.