Photoluminescent improvement of SrMoO4 by the electrochemical formation of Ca2+-doped solid solutions

Pure SrMoO4 and CaMoO4, and SrMoO4 solid solution crystallites were successfully prepared by a simple electrochemical process. The photoluminescence (PL) of SrMoO4 can be greatly improved by incorporating Ca2+ into its matrix to form solid solutions, and their emission bands slightly red-shift from 500 nm to 509 nm due to the local structure relaxation. Doping Ca2+ would inhibit the growth of SrMoO4 solid solution crystallites to result in smaller size crystallization. The smaller the particle sizes of the solid solutions, the higher their PL intensity.