Growth mechanism and vibrational and optical properties of SrMoO4: Tb3+, Sm3+ particles: green-orange tunable color

A SrMoO4 series co-doped with Tb3+ and Sm3+ was successfully prepared by the sonochemical method. The particles were characterized by X-ray diffraction, Raman spectroscopy, field emission gun scanning electron microscopy, UV-Vis spectroscopy and photoluminescence. Changes in SrMoO4: Tb3+, Sm3+ morphologies were observed from an orderly growth of the particles. The mechanism of particle growth was proposed, indicating a hierarchical evolution of SrMoO4: Tb3+, Sm3+ morphologies. The changes in emissions were evaluated by the effect of the dopants and their concentrations. Emissions were observed in white, green and orange according to the chemical composition of the samples. The SrMoO4 and SrMoO4: 1% Sm samples showed excellent results for CRI (79%) and LE (> 310 lm/W-opt), thus indicating a material with potential for efficient white light emission.