Electroluminescent materials

involving inorganic semiconductors like Ⅱ-Ⅵ compounds

metallorganic compounds and conjugated polymers

have many advantages in mobile communication and large plane display devices.In the dual emitting devices containing semiconductor nanocrystals and electroluminescent polymers

the emitting wavelength could not only be adjusted by doping or by forming core-shell structure

but also depend upon the content in the system and the applied voltage.The inorganic semiconductors with high-charge transporting abilities could affect the emission efficiency of the polymer emitter.Dual functions can also be achieved with high emission efficiency by benefiting from the photoconduction of the semiconductor nanocrystal and the electroluminescence of the polymer.