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January 2016

The picture shows a scheme and a scanning electron microscope (SEM) image of a sample consisting of a sapphire substrate, thermally evaporated gold electrodes, a „LiPON“ solid electrolyte layer and thermally evaporated lithium electrodes. On this sample impedance measurements have been performed. The SEM image shows Top left: Sapphire|Gold|”LiPON”|Li Top right: Sapphire|Gold|”LiPON”Bottom right: Sapphire|”LiPON”Bottom left: Sapphire|”LiPON”|LiThe image impressively shows how the morphology of the electrolyte layer depends on the substrate on which it is deposited. In contact with ambient atmosphere, “LiPON” tends to form flower-like structures which contain lithium carbonate. The evolution of these structures seems to be inhibited if the electrolyte film is deposited on gold.

January 2016
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