The current generation of polymer light-emitting electrochemical cells (LECs) suffers from insufficient stability during operation. One identified culprit is the active material, which comprises an intimate blend between an ion-conducting electrolyte and an electron-transporting conjugated polymer, as it tends to undergo phase separation during long-term operation and the intimate contact between the ion- and electron-transporting components provokes side reactions. To address these stability issues, we present here a bilayer LEC structure in which the electrolyte is spatially separated from the conjugated polymer. We demonstrate that employing this novel device structure, with its clearly separated ion- and electron-transport paths, leads to distinctly improved LEC performance in the form of decreased turn-on time and improved light emission. We also point out that it will allow for the utilization of combinations of active materials having mutually incompatible solubilities. © 2010 American Chemical Society.
CITATION STYLE
Sandström, A., Matyba, P., Inganäs, O., & Edman, L. (2010). Separating ion and electron transport: The bilayer light-emitting electrochemical cell. Journal of the American Chemical Society, 132(19), 6646–6647. https://doi.org/10.1021/ja102038e
Mendeley helps you to discover research relevant for your work.