A. Ujoatuonu, E. Efurumibe, and K. Ujoatuonu, “Green Fabrication of Dye-Sensitized Solar Cells Using TiO2 and Four Natural Leaf Dye Extracts”, njap, vol. 2, no. 3, pp. 83–91, Oct. 2026, doi: 10.62292/njap-v2i3-2026-106.