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Roughness Effect on the Lithium Diffusivity in WO3 Thin Films

  • M. Maaza (a1), A. Gorenstein (a2), C. Sella (a3), F. Bridou (a1), B. Pardo (a1), J. Corno (a1), G. Rogera (a1), O. Bohnke (a4) and C. Julien (a2)...

Abstract

In this work, we investigate the influence of surface roughness on the kinetics of Li+ during the insertion process in the well-known electrochromic material WO3. Thin films 500 Å thick have been grown by rf-sputtering and annealed in therange of 25-350ºC. Grazing angle X-ray reflectometry shows that the film roughnessincreases considerably with thermal treatment. These measurements are correlated with chemical diffusion investigations obtained by electrochemical titration in Li/WO3 cells.

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Roughness Effect on the Lithium Diffusivity in WO3 Thin Films

  • M. Maaza (a1), A. Gorenstein (a2), C. Sella (a3), F. Bridou (a1), B. Pardo (a1), J. Corno (a1), G. Rogera (a1), O. Bohnke (a4) and C. Julien (a2)...

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