Ukoba, Kingsley Ogheneovo.Inambao, Freddie Liswaniso.Eloka-Eboka, Andrew Chukwudum.2018-06-282018-06-2820182018https://doi.org/10.1155/2018/6062390http://hdl.handle.net/10413/15341Research article.The need for affordable, clean, efficient, and sustainable solar cells informed this study. Metal oxide TiO²/NiO heterojunction solar cells were fabricated using the spray pyrolysis technique. The optoelectronic properties of the heterojunction were determined. The fabricated solar cells exhibit a short-circuit current of 16.8 mA, open-circuit voltage of 350 mV, fill factor of 0.39, and conversion efficiency of 2.30% under 100mW/cm² illumination. This study will help advance the course for the development of low-cost, environmentally friendly, and sustainable solar cell materials from metal oxides.enSolar cells.NiO.Affordable.TiO2.Journal article