Abstract: Based on the Fowler-Nordheim tunneling injection, a model for carriers transport and recombination in organic bilayer devices at high electric field is presented. The influences of applied bias and interface barriers on carriers recombination and its efficiency are calculated and discussed. The theory derived from this model reasonably elucidates the experimental phenomena, and it proves that the electric field can control the carriers recombination region.

Keywords: 
• organic electroluminescence /
• bilayer devices /
• interface barriers