Impact of the Electrode Material on the Performance of Light-Emitting Electrochemical Cells.

ABSTRACT: Light-emitting electrochemical cells (LECs) are promising candidates for fully solution-processed lighting applications because they can comprise a single active-material layer and air-stable electrodes. While their performance is often claimed to be independent of the electrode material selection due to the in situ formation of electric double layers (EDLs), we demonstrate conceptually and experimentally that this understanding needs to be modified. Specifically, the exciton generation zone is observed to be affected by the electrode work function. We rationalize this finding by proposing that the ion concentration in the injection-facilitating EDLs depends on the offset between the electrode work function and the respective semiconductor orbital, which in turn influences the number of io

SUBMITTER: Kirch A 

PROVIDER: S-EPMC11758773 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature