Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5403284 | Journal of Luminescence | 2009 | 5 Pages |
Abstract
We have demonstrated an optimized polymeric host material comprising a blend of poly(9-vinylcarbazole) (PVK) and a fluorescent polymer for a highly efficient electrophosphorescence system. Although the chemical compatibility between the blue-emitting-fluorescent polymer and iridium complex, tris[2-phenylpyridine]iridium(III) (Ir-(ppy)3), is very poor, efficient energy transfers from the blended host to the Ir complex was observed when a small amount of blue-emitting-fluorescent polymer was added to the PVK matrix. The device showed a maximum external quantum efficiency at 5Â wt% blue-emitting-fluorescent polymer and 8Â wt% Ir complex doping concentrations.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Dong-Hee Yu, O Ok Park, Jong Hyeok Park,