First-Principles Investigation of Structural Stability and Optoelectronic Properties of Lead-Free CsSnₓGe₁₋ₓI₃ Mixed-Halide Perovskites for Advanced Optoelectronic Applications. Nigerian Journal of Applied Physics, [S. l.], v. 2, n. 2, p. 160–168, 2026. DOI: 10.62292/. Disponível em: https://njap.nipngr.org/index.php/njap/article/view/48. Acesso em: 28 jul. 2026.