Organization 3rd International School/Conference of Quantum Nanostructures - 2026 serves online sessions on optoelectronic models of semiconductor-based nanodevices. School topics mainly include electro-optical properties.ISQN-2026 Organizing Committee Sami Ortakaya, Ph.DNMP Academic DirectorC. A. Duque, Prof.Universidad de Antioquia, ColombiaGrazia Trevisani, Prof.Kaoru Matsui, Ph.DPolly W. Graves, M.Sc.Mitchell C. Hellwig, M.Sc.