Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Atomic structures of proposed doping models of graphene, including (a) quaternary N(B, P, S)-doped graphene (model-a); (b–d) single-vacancy graphene with the single pyridine-N (B, P, S) doping (mode-b), double-N (B, P, S) doping (model-c), and triple-N (B, P, S) doping (model-d); and (e–g) single-vacancy graphene with the NNS(P) co-doping (model-e), NSS(P) co-doping (model-f), and NS(P) co-doping (model-g).
