Rokhmat, Mamat, Edi Wibowo, Sutisna Sutisna, Khairurrijal Khairurrijal, and Mikrajuddin Abdullah. 2018. “Development of a Low-Cost TiO2/CuO/Cu Solar Cell by Using Combined Spraying and Electroplating Method”. Journal of Mathematical and Fundamental Sciences 50 (1):92-101. https://doi.org/10.5614/j.math.fund.sci.2018.50.1.8.