Electrically driven ZnO nanoparticle light emitting device

A light emitting device with commercially available ZnO nanoparticles as an active layer was realised without the help of organic support layers. A tight ZnO nanoparticle layer with thickness of 500 nm was spin coated on the top of an indium tin oxide fused silica substrate. After evaporation of a top aluminium electrode, diode-like I-V characteristics and a pronounced electroluminescence in the visible spectral range were obtained.