Reply to the ‘Comment on “Regulating the valence level arrangement of high-Al-content AlGaN quantum wells using additional potentials with Mg doping”’ by W. Lambrecht, Phys. Chem. Chem. Phys., 2023, 25, DOI: 10.1039/D2CP01080A

A defense and further discussions are provided for the paper [ Phys. Chem. Chem. Phys. , 2022, 24 , 5529–5538]. The dominant effects of orbital coupling and Coulomb interaction on the Mg-doped AlN/AlGaN QWs are emphasized in the reply.