The single crystalline ZnO nanowires were self-assembly grown on n-type (111) plane of the silicon substrate using polymer assisted complexing softtemplate process through a simple polymer complexation and lowtemperature oxidizing-sintering

which have smooth top and fine hexagonal columnar structure.Based on the ZnO nanowire/polyacrylamide system

we construct the ZnO nanowire/polyacrylamide light emitting device that exhibits blue electrically driven emission with a relatively low threshold voltage at ambient temperature and pressure

and the ZnO-nanowire-based LED’s emission wavelength is easily tuned by controlling the applied excitation voltage.The nearly vertically aligned ZnO-nanowires with polyacrylamide film were used as emissive layers in the devices.The method uses polyacrylamide as binder in the LED device and dispersion medium in the luminescence layer

which stabilizes the quasi-arrays of ZnO nanowires embedding in a thin polyacrylamide film on silicon substrate and passivates the surface of ZnO nanocrystals

to prevent the quenching of luminescence.The results indicated that the novel technique is a low-cost process for ZnO-based UV or blue light emission and reduces the requirement for achieving robust p-doping of ZnO film.It suggests that such ZnO-nanowire/polyacrylamide-based LEDs will be promising for use in flat-panel displays.