Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1545724 | Physica E: Low-dimensional Systems and Nanostructures | 2009 | 4 Pages |
Abstract
We demonstrate highly efficient green and red fluorescence dyes-doped electroluminescent devices using cohost strategy. The cohost system is composed of tris-(8-hydroxyquinolinato) aluminum (Alq) and 9,10-di(2-naphthyl) anthracene (ADN). The maximum current efficiencies are increased by 54% and 104% for green and red devices by optimizing the ratio between ADN and Alq in the cohost compared to the conventional Alq single-host devices, respectively. We attribute the improvement of efficiencies to balanced hole and electron injection into the emitting layer, the enlarged width of recombination region and the multiple emission processes.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Jianzhuo Zhu, Wenlian Li, Bei Chu, Dongfang Yang, Guang Zhang, Huihui Liu, Yiren Chen, Zisheng Su, Junbo Wang, Shuanghong Wu,