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You are here: About Us > Management > Supervisory Board > Professor Karl Leo Professor Karl Leo Having completed his PhD at the Max Planck Institute for Solid State Physics in Stuttgart, he initially went to AT&T Bell Laboratories in the USA and then joined the Institute of Semiconductor Engineering at RWTH Aachen. In 1993 he accepted an appointment as a Professor of Opto-Electronics at the Institute of Applied Photo-Physics at Dresden Technical University. Karl Leo's research focuses on semiconductor optics and the physics of thin organic layers. His earlier work on the generation and detection of coherent oscillations in semiconductors has opened up new possibilities for ultra-short-time spectroscopy. Together with his co-workers, he introduced new concepts for construction components on the basis of the controlled formation of organic solid-state bodies. This includes the manufacturing of organic light-emitting diodes with the lowest operating voltages world wide. In recognition of his scientific achievements, Karl Leo has been awarded the Max Planck Society's Otto Hahn Medal as well as the Benningsen Promotion Prize of the Land of North Rhine-Westphalia. Karl Leo won the "Gottfried Wilhelm Leibniz-Price" in 2002.