Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Excitons in boron nitride nanotubes: dimensionality effects.

Ludger Wirtz1, Andrea Marini, Angel Rubio

  • 1Institute for Electronics, Microelectronics, and Nanotechnology (IEMN), CNRS-UMR 8520, B.P. 60069, 59652 Villeneuve d'Ascq Cedex, France.

Physical Review Letters
|April 12, 2006
PubMed
Summary

Boron nitride (BN) nanotubes exhibit optical absorption dominated by strongly bound excitons. Their binding energy varies with dimensionality, explaining the consistent optical gap across different BN forms.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Cavity control of multiferroic order in single-layer NiI<sub>2</sub>.

npj computational materials·2026
Same author

Multiple photon field-induced topological states in bulk HgTe.

Science advances·2026
Same author

Correction: Role of Electrocardiogram for the Detection of Cardiac Diseases in a Healthy Primary School Population: Data from the "Cuore e Scuola" Study.

Pediatric cardiology·2026
Same author

Foundation models and deep learning for cancer drug response prediction: a framework for data, metrics, and validation.

Briefings in bioinformatics·2026
Same author

A multilevel linguistic analysis reveals linguistic impairments in persons with multiple sclerosis.

Journal of communication disorders·2026
Same author

Mixed endometrial carcinoma: is it time to profile the two components separately?

Frontiers in oncology·2026

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Boron nitride (BN) nanotubes are promising nanomaterials with unique electronic and optical properties.
  • Understanding the optical absorption spectra is crucial for their application in optoelectronics.

Purpose of the Study:

  • To investigate the nature of excitons in boron nitride nanotubes.
  • To determine the factors influencing the optical absorption spectra of BN nanotubes.
  • To explain the observed constancy of the optical gap in BN nanostructures.

Main Methods:

  • First-principles calculations were employed to model the electronic structure and optical properties.
  • Exciton binding energies were calculated for different dimensionalities of boron nitride (bulk, sheet, and nanotubes).

Related Experiment Videos

Main Results:

  • Optical absorption spectra are dominated by strongly bound excitons.
  • Exciton binding energy significantly increases with decreasing dimensionality, from 0.7 eV in bulk BN to over 3 eV in (2,2) nanotubes.
  • The binding energy rapidly converges to the sheet value as nanotube diameter increases.
  • The position of the primary excitonic peak remains largely invariant with tube radius and dimensionality.

Conclusions:

  • The strong localization of excitons in BN nanotubes is responsible for their characteristic optical properties.
  • The calculated exciton binding energies provide a theoretical explanation for the experimentally observed constant optical gap in various boron nitride nanostructures.