Usman, T. et al. 2026. Tailoring halide double perovskite materials Rb₂MgSnY₆ (Y = I, Br, Cl) for enhanced optoelectronic and solar cells through first-principles study. Opto-Electronics Review. 33, 4 (Mar. 2026), e155902 . DOI:https://doi.org/10.24425/opelre.2025.155902.