Pulsed laser deposited GeTe-rich GeTe-Sb2Te3 thin films - Institut de chimie de la matière condensée de Bordeaux Accéder directement au contenu
Article Dans Une Revue Scientific Reports Année : 2016

Pulsed laser deposited GeTe-rich GeTe-Sb2Te3 thin films

Résumé

Pulsed laser deposition technique was used for the fabrication of Ge-Te rich GeTe-Sb2Te3 (Ge6Sb2Te9, Ge8Sb2Te11, Ge10Sb2Te13 and Ge12Sb2Te15) amorphous thin films. To evaluate the influence of GeTe content in the deposited films on physico-chemical properties of the GST materials, scanning electron microscopy with energy-dispersive X-ray analysis, X-ray diffraction and reflectometry, atomic force microscopy, Raman scattering spectroscopy, optical reflectivity and sheet resistance temperature dependences as well as variable angle spectroscopic ellipsometry measurements were used to characterize as-deposited (amorphous) and annealed (crystalline) layers. Upon crystallization, optical functions and electrical resistance of the films change drastically, leading to large optical and electrical contrast between amorphous and crystalline phases. Large changes of optical/electrical properties are accompanied by the variations of thickness, density and roughness of the films due to crystallization. Reflectivity contrast as high as ~0.21 at 405 nm was calculated for Ge8Sb2Te11, Ge10Sb2Te13 and Ge12Sb2Te15 layers.

Domaines

Chimie
Fichier principal
Vignette du fichier
srep26552.pdf (1003.34 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-01326290 , version 1 (27-11-2023)

Identifiants

Citer

M. Bouška, Stanislav Pechev, Quentin Simon, R. Boidin, Virginie Nazabal, et al.. Pulsed laser deposited GeTe-rich GeTe-Sb2Te3 thin films. Scientific Reports, 2016, 6 (1), 26552 (10 p.). ⟨10.1038/srep26552⟩. ⟨hal-01326290⟩
67 Consultations
3 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More