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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

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