Figure 3
(a) Three micrographs of the same region encompassing a 60-µm-wide written electrolyte-free line, as recorded at the following times after voltage application (from top to bottom): t = 0 s, t = 20 s, and t = 120 s. The micrographs were captured through the substrate side using episcopic illumination, and the device was driven by 6 V. (b) Time evolution of the emission line width from the same device, with the standard deviation indicated by the error bars. (c) Schematic of the device operation of the line-art bilayer LEC, with the open circles representing holes and the solid circles representing electrons. The solid lines with arrows indicate electronic and ionic motion during operation, whereas the dashed and crossed arrows denote unlikely transport paths. For clarity, the dimensions are not to scale.
