La_<0.5>Sr_<0.5>CoO_3放電カソード材料への絶縁物添加による発光量増加

概要

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The La0.5Sr0.5CoO3 was used as a cathode for the first time when the plasma display panel was used on the handheld personal computer. It has favorable sputtering resistance characteristic and stable discharge characteristic in gases. The La0.5Sr0.5CoO3 cathode is used as a powder, and a mixture powder of La0.5Sr0.5CoO3 and insulating material can be used as a cathode. When a mixture powder of La0.5Sr0.5CoO3 and aluminum oxide is used as a cathode, the luminescence and the discharge voltage of the unit cell increase depending on the weight of aluminum oxide. In this report, the luminescence characteristics of the La0.5Sr0.5CoO3 cathode with the addition of aluminum oxide was investigated through an analysis of the DC plasma panel which was made as prototype.In order to find out this mechanism, the electric fields on the cathode surfaces were estimated on the mixture powder cathodes of individual weight of aluminum oxide. The electric fields on the cathode surfaces increase depending on the weight of aluminum oxide, and the luminescence increase depending on the electric fields on the cathode surfaces.
2009-06-01