2005/08/29 by Cheol-Hwan Park, Catalin D. Spataru, Steven G. Louie · 3 citations
Materials Science · Physics and Astronomy · #2D Materials and Applications #Boron and Carbon Nanomaterials Research #Graphene research and applications #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevlett.96.126105
published as Phys. Rev. Lett. 96, 126105 (2006) · 4 pages, 4 figures
arxiv created 2005/08/29 · openalex publication_date 2006/03/30 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report first-principles calculations of the effects of quasiparticle self-energy and electron-hole interaction on the optical properties of single-walled boron nitride nanotubes. Excitonic effects are shown to be even more important in BN nanotubes than in carbon nanotubes. Electron-hole interactions give rise to complexes of bright (and dark) excitons, which qualitatively alter the optical response. Excitons with a binding energy larger than 2 eV are found in the BN nanotubes. Moreover, unlike the carbon nanotubes, theory predicts that these exciton states are comprised of coherent supposition of transitions from several different subband pairs, giving rise to novel behaviors.