B. Hasan, Alaa, and Maryam A. Ali. “Improve Performance of Solar Cell by Using Grooves Which Have Semicircular Shape on The Surface by Using Program (ZEMAX)”. Ibn AL- Haitham Journal For Pure and Applied Sciences 29, no. 1 (March 9, 2017). Accessed May 24, 2022. https://jih.uobaghdad.edu.iq/index.php/j/article/view/77.