Organic Light Emitting Diode (IMAGE) Max Planck Institute for Polymer Research Caption The first prototype of the OLED developed in Mainz, Germany, illuminates the MPI-P logo Credit MPI-P Usage Restrictions License CC-BY-SA 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.