Suppressing Phase Segregation and Improving Stability in Mixed-Halide Perovskites through Spinel Oxide-Directed Epitaxy - Diana K. LaFollette; Martin Gomez-Dominguez; Kunal Datta; Amanda Conde del Moral; Seungjun Cha; Jack Lawton; Ruipeng Li; Benjamin Lawrie; Yanqi Luo; Carlo A. R. Perini; Guoxiang Hu; Juan-Pablo Correa-Baena (Journal of the American Chemical Society, 2026)