the performance of MEH–PPV and PFO-based light emitting diodes. Though the turn-on
voltage increases with incorporation of EBL, a significant increase in luminance and
luminous efficiency for both the devices is observed. The EBL improves the device
performance by blocking electrons at the EBL–polymer interface, thereby increasing the
recombination probability of electrons and holes. The luminance of the MEH–PPV based Bio …