“Fabrication and Characterization of a Dye-Sensitized Solar Cell using Natural Dye Extract of Rosella (Hibiscus sabdariffa L.) as Photosensitizer”, J. Nig. Soc. Phys. Sci., vol. 3, no. 4, pp. 287–291, Nov. 2021, doi: 10.46481/jnsps.2021.346.