A Simple Model (image) Helmholtz-Zentrum Berlin für Materialien und Energie Share Print E-Mail Caption An ultra-thin dielectric layer can facilitate the extraction of charge carriers (shown here for "holes" in red) from organic semiconductors into metal contacts. It establishes a continuous connection between the energy levels in the organic material (blue) and the metal (black, the Fermi level). This improves electrical contact. Credit M. Oehzelt/HZB Usage Restrictions None Share Print E-Mail 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.