• 文献标题:   Electronic properties of N-rich graphene nano-chevrons
  • 文献类型:   Article
  • 作  者:   AZEVEDO ASD, SARAIVASOUZA A, MEUNIER V, GIRAO EC
  • 作者关键词:  
  • 出版物名称:   PHYSICAL CHEMISTRY CHEMICAL PHYSICS
  • ISSN:   1463-9076 EI 1463-9084
  • 通讯作者地址:  
  • 被引频次:   1
  • DOI:   10.1039/d1cp00197c EA MAY 2021
  • 出版年:   2021

▎ 摘  要

Theoretical analysis based on density functional theory describes the microscopic origins of emerging electronic and magnetic properties in quasi-1D nitrogen-rich graphene nanoribbon structures with chevron-like (or wiggle-edged) configurations. The study focuses on systems with structural units composed of hexagonal graphitic units featuring one and two nitrogen atoms substituted in the graphitic structure, in positions contrasting with the more commonly considered pyridinic configurations. This type of substitution introduces nitrogen levels close to the Fermi level which in turn induce spin polarization depending on a number of structural features. We demonstrate that these systems present a broader set of electronic and magnetic behaviors relative to their pure hydrocarbon counterparts, with the possibility of engineering the electronic band gap strategically using different spin configurations and positions of the substituting nitrogen atoms.