Influence of the network modifier on the characteristics of MSnO3 (M=Sr and Ca) thin films synthesized by chemical solution deposition - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Solid State Chemistry Année : 2013

Influence of the network modifier on the characteristics of MSnO3 (M=Sr and Ca) thin films synthesized by chemical solution deposition

R. M. M. Marinho
  • Fonction : Auteur
G. P. Casali
  • Fonction : Auteur
M. Siu-Li
  • Fonction : Auteur
A.G. Souza
  • Fonction : Auteur
E. Longo
  • Fonction : Auteur
I.T. Weber
  • Fonction : Auteur
I. M. G. Santos
  • Fonction : Auteur
Valérie Bouquet
  • Fonction : Auteur
  • PersonId : 848831

Résumé

CaSnO3 and SrSnO3 alkaline earth stannate thin films were prepared by chemical solution deposition using the polymeric precursor method on various single crystal substrates (R- and C-sapphire and 100-SrTiO3) at different temperatures. The films were characterized by X-ray diffraction (θ-2θ, ω- and φ-scans), field emission scanning electron microscopy, atomic force microscopy, micro-Raman spectroscopy and photoluminescence. Epitaxial SrSnO3 and CaSnO3 thin films were obtained on SrTiO3 with a high crystalline quality. The long-range symmetry promoted a short-range disorder which led to photoluminescence in the epitaxial films. In contrast, the films deposited on sapphire exhibited a random polycrystalline growth with no meaningful emission regardless of the substrate orientation. The network modifier (Ca or Sr) and the substrate (sapphire or SrTiO3) influenced the crystallization process and/or the microstructure. Higher is the tilts of the SnO6 octahedra, as in CaSnO3, higher is the crystallization temperature, which changed also the nucleation/grain growth process.

Dates et versions

hal-00814061 , version 1 (16-04-2013)

Identifiants

Citer

M. C. F. Alves, R. M. M. Marinho, G. P. Casali, M. Siu-Li, Stéphanie Députier, et al.. Influence of the network modifier on the characteristics of MSnO3 (M=Sr and Ca) thin films synthesized by chemical solution deposition. Journal of Solid State Chemistry, 2013, 199, pp.34-41. ⟨10.1016/j.jssc.2012.11.014⟩. ⟨hal-00814061⟩
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