Abboo A, salih ,Abeer. Analytical study of the high absorption Region of the optical absorption edge of a-Si:H films using the derivative method. Iraqi Journal of Science [Internet]. 2023 Nov. 24 [cited 2025 Dec. 9];55(2A):425-34. Available from: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/11697