Optical and electronic properties of conductive ternary nitrides with rare- or alkaline-earth elements - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Applied Physics Année : 2016

Optical and electronic properties of conductive ternary nitrides with rare- or alkaline-earth elements

S. Kassavetis
A. Hodroj
J. Pierson

Résumé

Conductive nitrides, such as TiN, are key engineering materials for electronics, photonics, and plasmonics; one of the essential issues for such applications is the ability of tuning the conduction electron density, the resistivity, and the electron scattering. While enhancing the conduction electron density and blueshifting the intraband absorption towards the UV were easily achieved previously, reducing the conduction electron density and redshifting the intraband absorption into the infrared are still an open issue. The latter is achieved in this work by alloying TiN by rare earth (RE = Sc, Y, La) or alkaline earth (AE = Mg, Ca) atoms in Ti substitutional positions. The produced TixRE1−xN and TixAE1−xN thin film samples were grown by a hybrid arc evaporation/sputtering process, and most of them are stable in the B1 cubic structure. Their optical properties were studied in an extensive spectral range by spectroscopic ellipsometry. The ellipsometric spectra were analyzed and quantified by the Drude-Lorentz model, which provided the conduction electron density, the electron mean free path, and the resistivity. The observed interband transitions are firmly assigned, and the optical and electrical properties of TixRE1−xN and TixAE1−xN are quantitatively correlated with their composition and crystal structure.

Domaines

Matériaux
Fichier non déposé

Dates et versions

hal-04094435 , version 1 (11-05-2023)

Identifiants

Citer

S. Kassavetis, A. Hodroj, C. Metaxa, S. Logothetidis, J. Pierson, et al.. Optical and electronic properties of conductive ternary nitrides with rare- or alkaline-earth elements. Journal of Applied Physics, 2016, 120 (22), pp.225106. ⟨10.1063/1.4971407⟩. ⟨hal-04094435⟩
11 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More