Which mechanism causes increased conductivity in graphene-based devices with nitrogen doping?

💡 Explanation

When nitrogen is introduced into graphene, it substitutes carbon atoms, each nitrogen supplies an additional valance electron thus doping graphene. The increased electron orbital hybridization due to the nitrogen atoms causes new electron pathways, leading to higher carrier concentration at the dirac point. Therefore enhanced orbital hybridization results in higher electrical conductivity, rather than reducing phonon scattering, increasing grain boundary conduction, or generating thermal electricity which require separate doping effects or band structure changes.

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