Muhammad Aliff Hafeez Azman, “Enhanced Solar Energy Conversion Through Optimized Multijunction Photovoltaic Cells”, IJIE, vol. 17, no. 5, pp. 339–349, Aug. 2025, Accessed: Apr. 09, 2026. [Online]. Available: https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/18646