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Article Dans Une Revue Thin Solid Films Année : 2013

Complete elastic characterization of lithium phosphorous oxynitride films using picosecond ultrasonics

Laurent Belliard
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S. Martin
C. Secouard
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Bernard Perrin
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Résumé

We report on a complete elastic characterization by picosecond ultrasonics technique of lithium phosphorous oxynitride (LiPON) thin films, which are nowadays, considered as promising solid-state electrolytes for microbatteries technology. Longitudinal sound velocity is deduced from Brillouin oscillation detection at variable incidence angles. The density is estimated through an interfacial energy analysis related to the echo amplitude decay. Transverse wave velocity is obtained across the dispersion curve of Rayleigh surface waves. Combining these different approaches, Young's modulus and Poisson's ratio of LiPON are finally found to be 79 GPa and 0.27, respectively. (C) 2013 Elsevier B. V. All rights reserved.
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Dates et versions

hal-01233815 , version 1 (25-11-2015)

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F. Xu, Laurent Belliard, D. Fournier, Eric Charron, Jean-Yves Duquesne, et al.. Complete elastic characterization of lithium phosphorous oxynitride films using picosecond ultrasonics. Thin Solid Films, 2013, 548, pp.366-370. ⟨10.1016/j.tsf.2013.08.080⟩. ⟨hal-01233815⟩
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