コミュニケーション
CO Sensing Properties of Hetero-layered ZnO/SnO2 Thin Films Prepared by the Sol-gel Method
2003 年 71 巻 6 号 p. 423-426
詳細
2003 年 71 巻 6 号 p. 423-426
A hetero-layered ZnO/SnO2 thin film was prepared by the sol-gel method to improve the sensing properties for the CO gas. The CO sensitivity and selectivity of the hetero-layered ZnO/SnO2 thin film were both drastically improved than that of the single-layered Pd-SnO2 thin film at a high operating temperature range from 300°C to 500°C. It was considered that the columnar ZnO layer deposited onto the SnO2 layer was very effective in decreasing the influence of the interference gases, such as NOx.
