Mind the mobilities

Abstract

Organic Devices The operational speed of devices such as transistors depends on how fast charge carriers move through their active semiconductor material. In a Perspective, McCulloch et al. discuss how several recent claims of very high carrier mobilities in organic semiconductors overstate the values by at least an order of magnitude. These indirect measurements based on the transistor devices themselves can be flawed because the modeling of the current flow is inadequate. Science , this issue p. [1521][1] [1]: /lookup/doi/10.1126/science.aaf9062