Abstract
By inserting a very thin layer of Ag between two layers of amorphous indium zinc tin oxide (IZTO), we fabricated a highly flexible, low resistance, and highly transparent IZTO-Ag-IZTO multilayer electrode on a polyethylene terephthalate (PET) substrate. Due to surface plasmon resonance (SPR) effects and the ductility of the Ag layer, the IZTO-Ag-IZTO electrode exhibited a low sheet resistance of 4.99 sq. and a high transparency of 86% as well as superior flexibility despite the very thin thickness of the IZTO layer (30 nm). It was found that the transition of the Ag layer from distinct islands to a continuous film occurred at a critical thickness (∼14 nm). Continuity of the Ag film is very important for SPR in IZTO-Ag-IZTO electrode. The current density-voltage-luminance characteristics of flexible organic light emitting diodes (OLEDs) fabricated on IZTO-Ag-IZTO/PET were better than those of flexible OLEDs fabricated on an ITO/PET substrate due to the low sheet resistance and high work function of the IZTO.
| Original language | English |
|---|---|
| Article number | 223302 |
| Journal | Applied Physics Letters |
| Volume | 92 |
| Issue number | 22 |
| DOIs | |
| State | Published - 2008 |
| Externally published | Yes |