Abstract
We have developed top emission organic light-emitting devices using a CsCl capping layer on top of semitransparent Ca/Ag cathode. By using a CsCl capping layer, the transmittance of top electrode can be improved by 93%. While the electrical conduction characteristic of device is not influenced by the capping layer, the current efficiency increases with increasing the transmittance of Ca/Ag/CsCl cathode. For example, as the transmittance of top electrode increases from 55 to 91% by varying CsCl thickness, the current efficiency of green fluorescent top-emitting device increases from 8 to 18 cd/A.
| Original language | English |
|---|---|
| Pages (from-to) | 2793-2795 |
| Number of pages | 3 |
| Journal | Thin Solid Films |
| Volume | 518 |
| Issue number | 10 |
| DOIs | |
| State | Published - 1 Mar 2010 |
Keywords
- Capping layer
- Cesium Chloride
- Organic light-emitting device
- Top emission
- Transparent cathode