Optimum composition of dielectric materials, (Ca, Sr) oxides, in AC-operated plasma display panels

From the measurements of the secondary electron emission and an Auger analysis, the firing voltage, 65 V, was obtained at the composition of mixtures of CaO and SrO in the ratio of 25 : 75 wt%. From the half-width value of the energy distribution curve of the secondary electrons and Richardson plot, it was obtained that the electron affinity and the work function has the minimum value at the optimum composition. The excess Sr layer was observed at the optimum composition from an Auger analysis. From the experimental results, we propose that the donor like states formed by the excess Sr increase the yield and the firing voltage is decreased consequently.