Programming multilevel crystallization states in phase-change-material thin films - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Optical Materials Express Année : 2023

Programming multilevel crystallization states in phase-change-material thin films

Arnaud Taute
  • Fonction : Auteur
Sadek Al-Jibouri
  • Fonction : Auteur
Stéphane Monfray
  • Fonction : Auteur
Julien Lumeau
Antonin Moreau
  • Fonction : Auteur
Xavier Letartre
Nicolas Baboux
  • Fonction : Auteur
Lotfi Berguiga
Sébastien Cueff

Résumé

We propose and demonstrate a simple method to accurately monitor and program arbitrary states of partial crystallization in phase-change materials (PCMs). The method relies both on the optical absorption in PCMs as well as on the physics of crystallization kinetics. Instead of raising temperature incrementally to increase the fraction of crystallized material, we leverage the time evolution of crystallization at constant temperatures and couple this to a real-time optical monitoring to precisely control the change of phase. We experimentally demonstrate this scheme by encoding a dozen of distinct states of crystallization in two different PCMs: GST and Sb 2 S 3 . We further exploit this ’time-crystallization’ for the in-situ analysis of phase change mechanisms and demonstrate that the physics of crystallization in Sb 2 S 3 is fully described by the so-called Johnson-Mehl-Avrami-Kolmogorov formalism. The presented method not only paves the way towards real-time and model-free programming of non-volatile reconfigurable photonic integrated devices, but also provides crucial insights into the physics of crystallization in PCMs.
Fichier principal
Vignette du fichier
ome-13-11-3113.pdf (3.3 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04243325 , version 1 (16-10-2023)

Identifiants

Citer

Arnaud Taute, Sadek Al-Jibouri, Capucine Laprais, Stéphane Monfray, Julien Lumeau, et al.. Programming multilevel crystallization states in phase-change-material thin films. Optical Materials Express, 2023, 13 (11), pp.3113-3120. ⟨10.1364/ome.499809⟩. ⟨hal-04243325⟩
31 Consultations
10 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More