Current-voltage characteristics of polymer light-emitting diodes

  title={Current-voltage characteristics of polymer light-emitting diodes},
  author={Esther M. Conwell and Ming-Wei Wu},
  booktitle={Optics \& Photonics},
Conduction in pristine conjugated polymers is by polaron hopping between sites corresponding to conjugation lengths. The strong increase of current I with voltage V observed for both emission-limited and ohmic contacts is due in large part to mobility increase as increasing field makes it more possible to overcome internal barriers, such as energy differences between sites. For emission-limited contacts an additional source of nonlinear increase of I with increasing V is greater ability to… 
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