NiO 첨가한 WO₃의 전기적 특성 = Electrical properties of NiO-doped WO₃

다국어 초록 (Multilingual Abstract)

NiO-doped WO₃thick films were prepared by a screen printing technique. The electrical property and microstructure of the films were investigated with the partial pressure of oxygen and the amount of NiO. The grain size of NiO-doped WO₃was smaller than that of undoped WO₃, but the grain size of 0.1, 1, 10 mol% NiO-doped WO₃were nearly the same. The electrical conductance of the WO₃thick films decreased with the oxygen partial pressure, and increased with the amount of NiO to the limit of solid solution. The variation of the electrical conductance with temperature is not so large in the extrinsic region, but it changed rapidly in the intrinsic region. The conductance decreased with adsorption of oxygen in the intermediate range between the extrinsic and intrinsic region.