Saikia, S., Ghosh, A., Gálico, D. A., Calado, C. M. S., Murugesu, M., Nag, A. (2026). Spin‐Flip Upconversion Luminescence and Tunable Downshifting Near‐Infrared Emissions via 4
                    <i>d</i>
                    ‐4
                    <i>f</i>
                    Interaction in Doped Halide Perovskite. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.7420770