| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1267739 | Organic Electronics | 2011 | 7 Pages |
By simply doping Li2CO3 in an alcohol soluble neutral conjugated polymer poly[9,9-bis(6′-diethoxylphosphorylhexyl)fluorene] (PF-EP), we demonstrate highly efficient multilayer electrophosphorescence white polymer light-emitting diodes with air-stable Al cathode. From the mechanism studies, we find that the phosphate groups can make Li ions movable in the PF-EP film, resulting in great improvement in the electron injection and transport ability of PF-EP. The hole-blocking ability is also strengthened.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights► We demonstrate efficient multilayer electrophosphorescence white PLEDs with Al cathode. ► We find that the phosphate groups can make Li ions movable in the PF-EP film. ► The movable Li ions great improve the electron injection and transport ability of PF-EP. ► The hole-blocking ability is also strengthened.
