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Metal-polymer interface in ultra-thin layers

Example: Optimization of metal – polymer interface for (O)LED’s: Scharper interfaces give higher efficiencies

During evaporation of Barium on PPV, most of the Barium diffuses into the PPV. This is shown by comparing the peak for a sub-monolayer of Barium (blue) with the actual peak (red).

The width of the peak is a measure for the depth distribution.