Electro-static trapping and deposition of nanoparticles in a submicron narrow gap for a lateral-electrode LED

We have developed a patterning method of trapping and deposition of nanoparticles in a submicron narrow gap. We demonstrated a light emitting device which consists of nanoparticles trapped in the gap of lateral electrodes. The nanoparticles (CdSe/ZnS) in the solvent were electrostatically trapped as a dielectric material in the gap by lateral electric field. As the solvent was evaporating, the nanoparticles were deposited in the gap. Electroluminescence from the nanoparticles in the gap was observed when current was applied through the lateral electrodes.