Bottom‐up synthesized graphene nanostructures, including 0D graphene quantum dots and
1D graphene nanoribbons, have recently emerged as promising candidates for efficient …

The electronic structure of quasi-one-dimensional graphene nanoribbons (GNRs) is closely
related to their width, boundary configuration and heteroatomic do** because of the …

We report the quasiparticle band gap, excitons, and highly anisotropic optical responses of
few-layer black phosphorous (phosphorene). It is shown that these materials exhibit unique …

Graphene, since the demonstration of its easy isolation by the exfoliation of graphite in 2004
by Novoselov, Geim and co-workers, has been attracting enormous attention in the scientific …

This article reviews the basic theoretical aspects of graphene, a one-atom-thick allotrope of
carbon, with unusual two-dimensional Dirac-like electronic excitations. The Dirac electrons …

We present first-principles calculations of many-electron effects on the optical response of
graphene, bilayer graphene, and graphite employing the GW-Bethe Salpeter equation …

Current studies addressing the engineering of charge carrier concentration and the
electronic band gap in epitaxial graphene using molecular adsorbates are reviewed. The …

It has been predicted that application of a strong electric field perpendicular to the plane of
bilayer graphene can induce a significant band gap. We have measured the optical …

Fast-response and high-sensitivity deep-ultraviolet (DUV) photodetectors with detection
wavelength shorter than 320 nm are in high demand due to their potential applications in …

Significant excitonic effects were observed in graphene by measuring its optical conductivity
in a broad spectral range including the two-dimensional π-band saddle-point singularities in …