Abstract: Eu³⁺ doped borate phosphors (SrB₄O₇, SrB₂O₄, Sr₂B₂O₅, Sr₃B₂O₆) were prepared by solid state reaction and sol-gel technique, respectively. The luminescent results showed that the four kinds of phosphors have different luminescent properties. The Sr₂B₂O₅:Eu³⁺, Sr₃B₂O₇:Eu³⁺ phosphors have the red emission at 610nm, the SrB₂O₄:Eu³⁺ phosphor has the orange emission at 593nm, however the SrB₄O₇:Eu³⁺ phosphor displays the emission peaks of Eu²⁺ ion, all that result from the different Eu-O coordination environment. The optimal doping concentration of phosphors is 2%.

Key words: strontium borate, luminescent properties, solid state reaction, sol-gel technique