采用固相法合成了Eu3+和Bi3+共掺杂的LaMgB5O10红色荧光粉，在紫外或蓝光激发下，样品的红光强度随着Bi2O3的增加而增强。利用X射线衍射对样品的结构进行了分析，结果表明，掺入Bi2O3后，样品的结晶度更好。根据Judd-Ofelt理论计算，得到样品的内量子效率不随掺杂剂的改变而变化，约为43%。在394 nm激发下，Eu3+和Bi3+共掺杂样品的红色荧光强度较Eu3+单掺杂样品中增强了50%。根据漫反射和变温光谱测量结果，分析指出Eu3+红色荧光增强是由于Eu3+的吸收增强。

Red phosphors of Eu3+ and Bi3+ single- and double- doped LaMgB5O10 have been synthesized by a solid-state reaction. The red emission intensities were enhanced with the increase of Bi2O3 content. The crystal structures were analyzed using the X-ray diffraction. It indicated that the crystallization is better in the codoped samples than the Eu3+ monodoped sample. According to the results calculated by the Judd-Ofelt theory, the internal quantum efficiencies keep a constant value of about 43%. Moreover, red emission intensity increase 50% in the codoped sample comparison with the Eu3+ monodoped one under 394 nm excitation. It was confirmed that the enhanced red photoluminescence is due to the increase of Eu3+absorption strengths.