D. A. Ibrahim, A. Usman, and A. D. Abubakar, “Ferroelectric-Driven Charge Separation and Cobalt-Induced Defect Engineering in BaTiO₃/Co–ZnO Heterostructures for Efficient Visible-Light Photocatalysis”, USci, vol. 5, no. 1, pp. 267–275, Mar. 2026, doi: 10.56919/usci.2651.022.