Akter, Nahid, M. Moshiur Rahman, and Shirin Akter. 2013. “Introducing a Phenomenon of Single Junction Multiple Band-Gap Solar Cell Compared to Single Junction or Multi Junction Solar Cell to Achieve High Efficiency”. ABC Journal of Advanced Research 2 (1): 30-35. https://doi.org/10.18034/abcjar.v2i1.16.