Blue-light excited and high color purity (Sr,Ca)LaLiWO6: Eu3+ phosphor with a tunable red to blue light ratio

Based on the SrLaLiWO 6 matrix, the study satisfactorily synthesized a red phosphor doped with Eu 3+ . Regulation of Ca 2+ doping to control the red-to-blue emission ratio of the phosphor. Analysis of the content and structure of the samples verified the production of high-purity (Sr,Ca)LaLiWO 6 : Eu 3+ phosphor. When blue light at 464   nm excites the phosphor, it emits intense red light. The emission intensity of Eu 3+ ions rose when Ca 2+ was incorporated to the SrLaLiWO 6 matrix. In the meantime, the Sr 0.96 Ca 0.04 La 0.7 LiWO 6 : 0.3Eu 3+ phosphor shows comparatively high quantum efficiency and thermal stability. When the blue light-emitting chip is coupled with the Sr 0.96 Ca 0.04 La 0.7 LiWO 6 : 0.3Eu 3+ phosphor, the emission spectrum produced matches the absorption spectra of plant pigments. Consequently, the prepared sample is an excellent red-emitting phosphor with potential application value.