Abstract
Temperature dependence of current-voltage-luminance characteristics in organic light-emitting diodes are studied in a device structure of ITO/TPD/Alq3Al to understand an electrical conduction mechanism. The current-voltage-luminance characteristics are measured in the temperature range of 8K-300K, and analyzed them using a hopping model with exponential trap distribution and Fowler-Nordheim tunneling. At low temperatures below 150K, the Fowler-Nordheim tunneling conduction mechanism is dominant And we have obtained a zero field barrier height to be about 0.6-0.8eV.
Original language | English |
---|---|
Pages (from-to) | 1041-1042 |
Number of pages | 2 |
Journal | Synthetic Metals |
Volume | 137 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - 4 Apr 2003 |
Event | ICSM 2002 - Shanghai, China Duration: 29 Jun 2002 → 5 Jul 2002 |
Keywords
- Conduction mechanism
- Fowler-Nordheim tunneling
- Hopping model
- Organic light-emitting diodes