Comparative studies for determining the optical band gap energy of CuSe thin films. Proceedings of the Nigerian Society of Physical Sciences, [S. l.], v. 2, n. 1, p. 191, 2025. DOI: 10.61298/pnspsc.2025.2.191. Disponível em: https://rans.nsps.org.ng/index.php/pnspsc/article/view/191. Acesso em: 1 apr. 2025.