Sagir, Ziya’ulhaq, and Abdu Yunusa. 2025. “Comparative Analysis of the Photovoltaic Properties of Copper (I) Oxide Copper (I) Sulphide [N-Cu2O P-Cu2S] Heterojunction Solar Cells Fabricated by Immersion and Heating Techniques”. UMYU Scientifica 4 (1): 354-61. https://doi.org/10.56919/usci.2541.035.