The conduction band non-parabolicity of degenerate AZO semiconductors: k.p method Asghar Esmaeili, Mehdi Faraji and Somayyeh Karimi Eur. Phys. J. Appl. Phys., 83 3 (2018) 30101 Published online: 26 October 2018 DOI: 10.1051/epjap/2018180013