Abstract: Red emitting CaMoO₄:Eu³⁺,B³⁺ phosphor was successfully synthesized by co-precipitation method.The effect of Eu³⁺and B³⁺ doped content on the luminescent properties of the phosphor was investigated.The samples were characterized by X-ray diffraction (XRD) and photoluminescence spectrophotometer (PL).The results showed that the phosphor sintered at 900 °C for 3 h was a pure CaMoO₄ phase;The fluorescence intensity initially increased with increasing Eu³⁺ content,and then decreased,with the maximum intensity appearing at a Eu³⁺ content of 0.18;The emission spectrum intensity of CaMoO₄:Eu³⁺_0.18,B³⁺_x increased with Eu³⁺ doping content increasing,however,the agglomeration of particles are greatly increased when B³⁺ doping content is over 0.1.

Key words: co-precipitation method, luminescent properties, redphosphor, white light emitting diodes