Abstract
The ohmic hole injection in poly(9,9-dioctylfluorene) polymer light emitting diodes was analyzed. The ohmic nature of the contact in selected regions was confirmed by the appearance of dark injection space charge limited transient currents, which yield hole mobilities in agreement with the time-of-flight method. The appearance of ohmic injection was discussed within a model that assumes the existence of electron traps near the interface.
Original language | English (US) |
---|---|
Journal | Applied Physics Letters |
Volume | 83 |
Issue number | 4 |
DOIs | |
State | Published - Jul 28 2003 |
Externally published | Yes |