Study of electrical fatigue by defect engineering in organic light-emitting diodes

- Electrical fatigue is investigated in PPV-based polymer light-emitting diodes.
- Bromide defects remaining from Gilch synthesis limit PLED lifetime.
- Electrical stress yields lower hole mobility & transition to dispersive transport.
- Triplet excitons reduce lifetime and EL-emission-induced degradation observed.
- Self-consistent drift-diffusion model for charge carrier injection and transport.