Abstract
We present data for the electron trapping lifetime measured in the ć direction of anthracene over a wide range of temperatures (81–374 K) and applied electric fields (0.10–4.73 V/(μm). Over these ranges the lifetime is activated and the activation energy is independent of the field. We have considered several trapping models. Only one of these, a model consisting of a deep trap level and associated shallow “pre-trap” level, can adequately account for our data. We discuss briefly the possibility of a temperature dependent trapping cross-section.