Effect of dye doping on the charge carrier balance in PPV light emitting diodes as measured by admittance spectroscopy

I. N. Hulea, R. F. J. van der Scheer, H. B. Brom +3

Dye doping is a promising way to increase the spectral purity of polymer light-emitting diodes (LEDs). Here we analyze the frequency and field dependence of the complex admittance…