Séminaire - 29/11/2021 - Claudio ATTACCALITE - Optical excitations in layered materials: the case of hexagonal boron nitride

Invitation : Fabienne Michelini (Département EMONA, Equipe NQS).

Diffusion : IM2NP, CINaM, Irphe, LP3, Madirel (via P. Boulet), PIIM (via T. Angot), CPT (T. Martin), Fédération de Chimie (via S. Viel), CP2M

SEMINAIRE Lundi 29 novembre 2021 à 10h00

Salle des séminaires de l'Im2np, campus de Saint-Jérôme, 1er étage Bâtiment Poincaré

Claudio ATTACCALITE

CINAM, Aix-Marseille Université

Optical excitations in layered materials: the case of hexagonal boron nitride

Hexagonal boron nitride is a large band gap material with an atomic structure similar to graphite. In recent years it has attracted a lot of attention as a possible substrate for 2D materials, and for its optical properties. In this talk I will present a series of new experimental results and the corresponding theoretical interpretation. In particular I will discuss the role of bound excitons on the optical properties and their coupling with phonon modes in luminescence.[1,2]

References:

[1] Ellipsometry Study of Hexagonal Boron Nitride Using Synchrotron Radiation: Transparency Window in the Far‐UVC

L Artús, M Feneberg, C Attaccalite, JH Edgar, J Li, R Goldhahn, R Cuscó

Advanced Photonics Research 2 (5), 2000101 (2021)

[2] "Theory of phonon-assisted luminescence in solids: application to hexagonal boron nitride."

Cannuccia, Elena, B. Monserrat, and Claudio Attaccalite

Physical Review B 99.8, 081109 (2019)