Abstract
We investigate the dependence of the current-voltage characteristics of single layer light-emitting diodes fabricated with the electron transporting polymer poly(p-pyridine) (PPY). The characteristics are found to vary with temperature and are compared with results obtained for MEH-PPV devices. It is found that the barrier to injection deduced from UPS measurements is not the current limiting factor in these devices but that space charge effects resulting from n-type doping of the material give rise to the characteristics observed.
| Original language | English |
|---|---|
| Pages (from-to) | 1079 |
| Number of pages | 1079 |
| Journal | Synthetic Metals |
| Volume | 102 |
| Publication status | Published - Jun 1999 |
Keywords
- poly(p-pyridine)
- light-emitting diodes
- transport measurements
- ITO
- PHOTOELECTRON-SPECTROSCOPY
- POLY(2,2'-BIPYRIDINE-5,5'-DIYL)
- POLY(PYRIDINE-2,5-DIYL)
- POLYMERS