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Updated: Mar 24, 2026

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
Published on: April 14, 2020
Dimensionality effects on the luminescence properties of hBN
Léonard Schué1, Bruno Berini, Andreas C Betz
1Laboratoire d'Etude des Microstructures, ONERA-CNRS, Université Paris-Saclay, 29 avenue de la Division Leclerc, BP 72, 92322 Châtillon Cedex, France. annick.loiseau@onera.fr.
Abstract:
Cathodoluminescence (CL) experiments at low temperature have been undertaken on various bulk and exfoliated hexagonal boron nitride (hBN) samples. Different bulk crystals grown from different synthesis methods have been studied. All of them present the same so-called S series in the 5.6-6 eV range, proving its intrinsic character. Luminescence spectra of flakes containing 100 down to 6 layers have been recorded. Strong modifications in the same UV range are observed and discussed within the general framework of 2D exciton properties in lamellar crystals.
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