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Institutskolloquium der Physik und Chemie: "Semiconductor Interfaces: Atomic Structure, Charge Density and Electric Fields"

Die Hochschullehrer der Institute für Physik und Chemie der TU Ilmenau laden am Dienstag, dem 21. Januar 2020, zu einem gemeinsamen Kolloquium der Physik und Chemie ein.

Es spricht um 17:15 Uhr im Faraday-Hörsaal Prof. Dr. Kerstin Volz, Department of Physics, Philipps-Universität Marburg zum Thema "Semiconductor Interfaces: Atomic Structure, Charge Density and Electric Fields"

Zum Vortrag:

Modern semiconductor heterostructures are composed of several different materials grown on top of each other. The internal interfaces arising between these materials can have significant influence on device performance. Hence, it is important to first of all establish a knowledge on the composition and morphology of these interfaces and to correlate different structures to the optoelectronic properties of the heterostructure. The present presentation will summarize our current understanding of not only the intrinsic structure but also the local electric fields and charge densities at III/V interfaces as well as at defects in the III/V layer. To achieve that, several Scanning Transmission Electron Microscopy (STEM)-based methods are used in combination with appropriate image simulation.