The inception of phosphors provoked the need of highly efficient lighting sources for the conceivable next generation applications. In this regards, a striking characteristic material namely the mesoporous silica (MPS) and their series that are quite distinct to each other in their physical properties have been synthesized by adopting a cooperative self-assemble strategy. Utilizing it, the development of high-performance Sr1-xCa1-yEux+ySiO4 phosphor was traversed using a simple wet-solid phase process. Systematic investigations on morphological, structural, and few other physical properties were carried out. The derived results are intriguing with a crystal clear alteration in the phosphor morphology when MPS has been used as a silicate source. Subsequent luminescence studies displayed its efficient yellow-emitting property covering the red spectral components, along with good thermal luminescence stability. Perhaps, the designed prototype LEDs yielded a color correlation temperature (CCT) < 5000 K and color rendering index (CRI) > 80. Therefore, it directs the way for the fabrication of potential warm white LEDs with a long-lived emission efficacy and high thermal luminescence stability.