Studies on morphological and optoelectronic properties of MEH-CN-PPV:TiO2 nanocomposites

► Dramatic variation in photophysical studies of MEH-CN-PPV:TiO2. ► 5% nanocomposite film shows PL peak in high energy region similar to its solution phase. ► Enhanced EL at elevated voltages for MEH-CN-PPV:5% TiO2 hybrid device. ► Morphological conversions relate to the decay of EL in 10% hybrid device.