Energetic Landscape (IMAGE) Heidelberg University Caption Artistic representation of an energetic landscape that determines the movement of photo-induced positive (h+) and negative (e-) charges in photovoltaic devices. Credit Yana Vaynzof Usage Restrictions This image may be used only in connection with the contents of this press release, and the source of the image must also be cited. 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.