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Table 1 The band gap of zigzag and armchair graphenes in various widths

From: Design and adjustment of the graphene work function via size, modification, defects, and doping: a first-principle theory study

Graphene size Band gap (eV) Graphene size Band gap (eV)
Zigzag Armchair Zigzag Armchair
1 × 7 0.696 0.540
2 × 7 0.351 0.311 2 × 2 0.345 0.334
3 × 7 0.145 0.123 3 × 3 0.129 0.007
4 × 7 0.054 4 × 4 0.009 0.003
5 × 7 0.024 5 × 5 0.009
6 × 7 0.004 6 × 6
7 × 7 7 × 7