Fig. 5From: Design and adjustment of the graphene work function via size, modification, defects, and doping: a first-principle theory studyThe relationship between the formation energy and the number of doping atoms. The relationship between the formation energy and the number of doping atoms. Different types of doping atoms, e.g., Al, B, P, N, and Si, are doped in the graphene with 4 × 4-cell sizesBack to article page