Spectroscopic Analyses and the Influence of Concentration on the Photoluminescence Characteristics of Sm+3-Doped Silica Sol-Gel matrix. Iraqi Journal of Science, [S. l.], v. 65, n. 6, p. 3122–3130, 2024. DOI: 10.24996/ijs.2024.65.6.15. Disponível em: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/8103.. Acesso em: 7 apr. 2025.