Optical properties of isotopically-purified hexagonal boron nitride - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Communication Dans Un Congrès Année : 2017

Optical properties of isotopically-purified hexagonal boron nitride

Résumé

I will discuss here our recent results in isotopically-purified hBN crystals. We combined Raman scattering, photoluminescence, and X-ray diffraction for an in-depth characterization. On the one hand, as with standard semiconductors, both the phonon energy and electronic bandgap varied with the boron isotope mass, the latter due to the quantum effect of zero-point renormalization. On the other hand, temperature-dependent experiments focusing on the shear and breathing motions of adjacent layers revealed the specificity of isotope engineering in a layered material, with a modification of the Van der Waals interactions upon isotope purification.
Fichier non déposé

Dates et versions

hal-01648044 , version 1 (24-11-2017)

Identifiants

  • HAL Id : hal-01648044 , version 1

Citer

Guillaume Cassabois. Optical properties of isotopically-purified hexagonal boron nitride. 2nd International Workshop on UV Materials and Devices (IWUMD2017), Nov 2017, Fukuoka, Japan. ⟨hal-01648044⟩
123 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More