Patent ID: 6689630
Filing Date: 2004-02-10
Classification: C09K,H05B

Abstract:
A method of fabricating an alternating current thin film electroluminescent device by:preparing a non-conductive amorphous film comprising aluminum nitride and an Er luminescent center by RF magnetron sputtering an Al target and an Er target in a nitrogenous atmosphere at room temperature under vacuum; activating said amorphous film to form an emitter layer by annealing said amorphous film at or above about 1023 K; positioning said emitter layer between a pair of electrode layers; connecting an AC power source across said pair of electrode layers, wherein said emitter layer and said pair of electrode layers are arranged such that, upon activation of said AC power source, an electric field is created between said electrode layers across said emitter layer and wherein said aluminum nitride and said Er luminescent center are provided in proportions selected such that said electric field causes emission of visible light of said selected wavelength from said emitter layer.