Riaz, Muhammad, Ahmad S. Azzahrani, and Ahmed C. Kadhim. "Effect of Temperature on the Efficiency of Thin Film Amorphous Silicon Tandem Heterojunction Solar Cells with AFORS-HET." In Frontiers in Optics, pp. JTu2A-27. Optical Society of America, 2018. Kadhim, Ahmed C., Ahmad S. Azzahrani, and Susan K. Earles..