January 2015The picture shows a SEM-image of an undoped ceria (CeO2) thin film deposited by pulsed laser deposition (PLD) on a single crystalline sapphire substrate. The sample was kept at 1500 °C for overall 20 hours and afterwards coated with a thin layer of carbon to improve its electrical conductivity. The SEM image was taken at a specimen tilt of 70°. It shows the de-wetting of the previously area-covering CeO2 layer caused by the high-temperature treatment. This behavior is of interest for the investigation of the influence of morphology on the conductivity of ceria. (Picture submitted by Raika Oppermann.)https://www.uni-giessen.de/en/faculties/f08/departments/physchem/janek/gallerypotm/pom2015/PoM0115/viewhttps://www.uni-giessen.de/@@site-logo/logo.png
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January 2015
The picture shows a SEM-image of an undoped ceria (CeO2) thin film deposited by pulsed laser deposition (PLD) on a single crystalline sapphire substrate. The sample was kept at 1500 °C for overall 20 hours and afterwards coated with a thin layer of carbon to improve its electrical conductivity. The SEM image was taken at a specimen tilt of 70°. It shows the de-wetting of the previously area-covering CeO2 layer caused by the high-temperature treatment. This behavior is of interest for the investigation of the influence of morphology on the conductivity of ceria. (Picture submitted by Raika Oppermann.)
