Transient current properties in electronic paper

A lot can be learned about the charge transport inside electronic paper from current measurements. Under normal conditions the current response to a voltage step decays in time. However, under some conditions the current increases before decaying to its steady state value. It is not clear why this current bump occurs for high voltages or what its properties are, based on the applied voltage. In this article we will give an explanation for the current bump, and explain its properties.