Multicolor luminescence evolving from single-phase Eu3+/Tb3+ co-doped SrLaAlO4 nanomaterials for advanced photonic appliances

Highlights: • A series of Eu³⁺/Tb³⁺ co-doped SrLaAlO₄ nanophosphors are fabricated via combustion synthesis. • Crystal lattice factors and refinement parameters are depicted by Rietveld Refinement Technique. • Multi-color luminescence and energy-transfer efficiencies have been carefully inspected. • Potential candidate for UV & NUV white-LEDs, solar cells, photo-detectors and laser devices. Single-phase nanomaterials are the most promising materials, owing to their high luminous-efficiency, environmental-friendly and multicolor-luminance features. The crystal structure of Eu3+/Tb3 + co-doped SrLaAlO4 (SLAO) nanopowders were developed by combustion synthesis (CS). The formation of SLAO materials with tetragonal space group 14/mmm (1 3 9) was confirmed by Rietveld refinement of X-ray diffraction (XRD) arrangement. Multicolor luminescence has been achieved via tailoring Tb³⁺/Eu³⁺ ratio into SLAO matrix, under UV and near-UV irradiation. Moreover, energy-transfer (ET) efficiencies and analogous mechanisms have been discussed deeply. This work opens avenues for scholars to explore such nanomaterials for advanced photonic applications like white-LEDs, solar-cells, lasers, photo-detectors, etc.