1. MOCVD growth of porous cerium oxide thin films on silicon substrate
- Author
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Bruno Domenichini, Sylvie Bourgeois, P. Simon, L. Avril, N. Zanfoni, and Luc Imhoff
- Subjects
Cerium oxide ,Materials science ,Silicon ,Inorganic chemistry ,chemistry.chemical_element ,Surfaces and Interfaces ,General Chemistry ,Chemical vapor deposition ,Substrate (electronics) ,Condensed Matter Physics ,Surfaces, Coatings and Films ,Cerium ,Chemical state ,chemistry ,Materials Chemistry ,Thin film ,Layer (electronics) - Abstract
Porous cerium oxide thin films were grown by pulsed direct liquid injection metal organic chemical vapor deposition (DLI-MOCVD) on silicon substrate, using cerium tetrakis (1-methoxy-2-methyl-2-propanolate) dissolved in cyclohexane as precursor as well as oxygen as oxidant agent. The chemical and morphological characteristics of the films were investigated by XPS, SEM and TEM. The influence of the growth conditions on the morphological features of the thin films and the cerium chemical states are reported and discussed. The decrease of the oxygen and/or alkoxide flow rate induces the decrease of both the film thickness and the porosity of the layer. Moreover, the growth of silicate at the interface between the silicon substrate and the grown film is evidenced.
- Published
- 2015