Figure 3. Performance of roll-coated devices.
(a) Optoelectronic data recorded on a roll-coated poly(ethylene terephthalate)/indium-tin-oxide/ZnO/{SY+PEO+KCF3SO3}/PEDOT:PSS device during a voltage sweep at 0.1 V s−1. Inset: the brightness data plotted on a logarithmic scale. (b) The turn-on time for a nominally identical device driven in galvanostatic mode at j=770 A m−2. Inset: the brightness data plotted on a logarithmic scale. (c) Photograph of an encapsulated roll-coated device operating at V=7 V under ambient conditions. Note that the device had been stored under ambient air for 3 days before the voltage was applied.