Optical and Structural Properties of Er/Sr Co-Doped αMnS Films Prepared by Chemical Spray Pyrolysis. FUDMA Journal of Engineering and Technology, [S. l.], v. 1, n. 2, p. 425–435, 2025. DOI: 10.33003/sdfy9g96. Disponível em: https://fjet.fudutsinma.edu.ng/index.php/fjet/article/view/61. Acesso em: 14 mar. 2026.