Prof. Karl Leo (IMAGE) Technische Universität Dresden Caption Physicist Prof. Dr. Karl Leo of Technische Universität Dresden is the first German scientist to receive the Jan Rajchmann Award from the U.S. Society for Information Display (SID). With the award, SID recognizes Leo's "pioneering work on OLED displays, in particular the introduction of stable and controlled doping of organic semiconductors for highly efficient OLED displays." Credit Kai Schmidt/IAPP Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.