Abstract
The characteristics of polymer light emitting diodes (PLEDs) (ITO/PPV/Ca) depend strongly on the conditions during preparation and operation. We studied the effects of heat treatment (during and after preparation) of PLEDs with OC1C10-PPV as active layer. PLEDs showed a reduction of both the current and the light output to 40 % after annealing for only 30 min at 65 °C. Effects on I-V characteristics were studied by measuring single carrier devices (hole- and electron-dominated devices). The current reduction after heat treatment can be ascribed to degradation of the ITO/PPV and the Ca/PPV interfaces.
Original language | English |
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Pages (from-to) | 225-230 |
Journal | Macromolecular symposia |
Volume | 212 |
Issue number | 1 |
DOIs | |
Publication status | Published - Apr 2004 |
Externally published | Yes |
Keywords
- Annealing
- Conjugated polymers
- Degradation
- Interfaces
- Light emitting diodes (LED)