| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1441797 | Synthetic Metals | 2013 | 5 Pages |
We demonstrate an efficient red emitting host-guest LEC based on cationic iridium complexes. The host-guest LEC has brightness of 8.4 cd m−2, external quantum efficiency (EQE) of up to 3.5% and peak current efficiency of 3.4 cd A−1, the highest efficiencies reported to date for red-emitting host-guest LECs based on cationic iridium complexes. It is confirmed that dispersing the guest molecules into the host matrix would greatly inhibit the self-quenching of the guest molecules in the emissive layer and thus improving the device efficiency, and offering an effective approach to improve device efficiencies of LECs.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► An efficient host-guest red emitting LEC is realized with cationic iridium complexes. ► High external quantum efficiency (EQE) of up to 3.5% and current efficiency of 3.4 cd A−1 are achieved. ► It is confirmed that doping could depress self-quenching in the emissive layer and improve device efficiencies.
