Relations between the optical properties and the microstructure of TiO2 thin films prepared by ion-assisted deposition

作者: Y Leprince-Wang , D Souche , K Yu-Zhang , S Fisson , G Vuye

DOI: 10.1016/S0040-6090(99)00759-2

关键词: Transmission electron microscopyIonRefractive indexOpticsThin filmMaterials scienceMicrostructureAnalytical chemistryMolar absorptivityEllipsometryEvaporation

摘要: Abstract Oxygen ion-assisted TiO 2 thin films have been studied by in situ visible spectroscopic ellipsometry (SE) and transmission electron microscopy (TEM). Influence of the substrate nature temperature, ion kinetic energy E c ion/molecule ratio Φ i / at was investigated on microstructure optical properties films. It is revealed that refractive index n varies as a function average per molecule, d = ( ). Conditions for obtaining dense with high (n ~ 2.60 λ =0.45 μm) low extinction coefficient k found > dth ~50 eV). These are insensitive to moisture adsorption surface roughness. Cross-sectional TEM has mainly used observation phase identification prepared under different evaporation conditions. Comparison done relationship property measurements.

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