Patent ID: 7381994

Claim:
A light emitting device comprising a three-dimensional percolated metal layer comprising metal nanoparticles, the metal nanoparticles being distributed to define cavities of the layer, electroluminescence spots included in the percolated metal layer, the electroluminescence spots comprising light-emitting nanoparticles, a substrate for said percolated metal layer, at least two electrodes between which said percolated metal layer is arranged, a protective layer arranged on said percolated metal layer, a supply generator connected to the electrodes, to generate a potential difference for injecting electrons by tunnel effect through the percolated metal layer into the electroluminescence spots, to cause light emission therefrom, wherein said cavities are arranged according to a substantially regular three-dimensional lattice having properties of photonic crystal, said cavities including cavities having dimensions in the order of the visible wavelength to ease spontaneous emission of visible radiation from said electroluminescence spots.