Self-consistent analisys of the contact phenomena in low-mobility   semiconductors
  Self-consistent solution of charge injection and transport in low mobility LEDs is reported . We show that explicit description of the contact region under the same premise as transport equation is needed to accurately evaluate the current-voltage characteristics of polymer or small-molecule based LEDs . The result is compared to widely used models, which treat the contact region in implicit manner . 
Yevgeni Preezant and Nir Tessler