First-principles study on ferromagnetism in two-dimensional ZnO nanosheet

► We study on the fully-hydrogenated ZnONS doped with B, C, N, and F atoms. ► B, C, and N doped systems show magnetic properties due to less electronegative than O atom. ► B and C doped ZnONSs show half-metallicity, with 100% spin-polarized current at the Fermi level. ► The long-range ferromagnetism is attributed to O-Zn-O coupling chain due to p-p interaction between dopant and host atoms.