Berlin 2018 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 47: Poster Session II
MM 47.33: Poster
Mittwoch, 14. März 2018, 18:30–19:45, Poster C
Development of an in situ photo-electric TEM holder with time correlation between photo-electrical data and imaging. — •Jonas Lindner1, Vladimir Roddatis1, Emanuel Ronge1, Stefanie Mildner1, Patrick Peretzki2, Christian Jooss1, and Michael Seibt2 — 1Institute of Materials Physics, University of Goettingen, Germany — 2IV. Physical Institute, University of Goettingen, Germany
For an improved understanding of atomic scale processes involved in (photo-)electrochemical energy conversion, studies of electrodes and semiconductor devices under working conditions in high resolution transmission electron microscopy are highly demanded. This requires the time-correlation of TEM-images and spectroscopy-data with (photo-)electrical measurements data in an environmental transmission electron microscope (ETEM) , where systems can be studied under reactive chemical conditions, e.g. in H2O. A measurement system has been developed by combining the program languages from Gatan Digital Mircograph (DM), Labview and C++. It provides digital ETEM-control and synchronizes the DM spectroscopy data recording with current-voltage-curves, which leads to a time correlation of the experimental results. A proof of concept experiment for the in-situ time correlation of TEM images to electrical data with time resolution of up to 100ms is presented for the Ostwald ripening of a platinum -carbon nanocomposite, typically used in Focused Ion Beam (FIB) machines for contacting. Further photo-electrical in situ TEM measurements are done on oxide heterojunctions.