Y_2O_3螢光体薄膜の電界発光

概要

論文の詳細を見る
The two cases of emission of light from a phosphor film deposited on the surface of a thin film metal-insulater-metal sandwich have been structurally observed. In the first case, a Al-SiO-Au-Phosphor was deposited on glass. In the second case a Phosphor-Au-SiO-Al was deposited on glass. In each case, the SiO dielectric barrier and the Au electrode were approximately 100〜150 A and 100 A thick. The phosphor layer with 3000〜4000 A thick was deposited by electron beam evaporation. The phosphor was composed of Eu or Tb activated Y_2O_3 powder prepared through coprecipitation. In a darkend room, visible light could be seen radiating from the phosphor layer of the structure in which the voltage-current characteristic was highly nonlinear only when the bias exceeded 5V. The light output increased as the current through the dielectric film was increased. The light was easily seen when currents exceeded 1 mA/mm^2. The preparation methods and the electrical-optical properties are described in this paper.
明治大学の論文