Blue and red emitting Eu activated CaMgSi2O6 VUV phosphors

CaMgSi₂O₆:Eu (CMS:Eu) powder phosphors showing blue and red emissions were examined for vacuum UV (VUV) excitation applications. Nearly single phased CMS powder phosphors with either Eu²⁺ or Eu³⁺ activator can be synthesized using EuF₃ or Eu₂O₃ as source material, respectively. Under VUV excitation, the PL spectra show a good blue emission from Eu²⁺ and a good red emission from Eu³⁺ in the CMS host. At present, the PL intensity of CMS:Eu²⁺ under 147 nm excitation is about 50 % that of BAM:Eu²⁺