Carrier transport in organic alloy light emitting diodes

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Abstract
We present theoretical models and numerical results on the carrier transport mechanisms in single-layer organic alloy light emitting diodes. A typical organic alloy consists of a mixture of electron and hole transporting materials and is modeled by assigning individual conduction channels to each type of material. The sensitivity of the diode efficiency on several key parameters (alloy composition, energy level difference, contact barrier height, and traps, etc.) is studied. The results can be used to design structures to achieve balanced carrier injection and transport by properly adjusting these parameters.

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