Abstract:

Interface properties play an important role in semiconductor devices. With organic based semiconductor devices, such as organic light emitting diodes and organic thin film transistors, the role of interface properties is uniquely different than inorganic semiconductors. We have investigated the interface formation in organic semiconductor devices using photoemission spectroscopy and other surface sensitive probes. These observations allow us to discuss the mechanisms that can be used to describe the interface between organic semiconductors and metals or dielectrics, such as charge transfer and interface dipole formation, and relate these effects to the energy level alignment at interfaces and the device performance.
 
 
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