Abstract
The development of solution-processable europium-complex based organic light-emitting diodes (OLED) has been limited by their low efficiency. In this paper, we show that it is possible to produce a highly efficient, solution-processable, europium-complex based OLED with an external quantum efficiency of 4.3% at a brightness of 100 Cd/m(2) using off-the-shelf materials and without any specific optical design for improved light extraction. This is achieved by optimizing the device structure and the host matrix used. To our knowledge, this is the highest efficiency reported for solution-processable europium-complex based OLED devices, and the efficiency roll-off has been reduced compared with other reported europium-complex based devices. Our approach should be applicable to a wide range of solution-processable lanthanide complexes. (C) 2012 Elsevier B.V. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 3091-3096 |
| Number of pages | 6 |
| Journal | Organic Electronics |
| Volume | 13 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - Dec 2012 |