Transparent conducting Al-Zr co-doped ZnO thin films with high transparency and relatively low resistivity are successfully prepared by DC magnetron sputtering at room temperature.The experimental results show that argon pressure has a significant influence to the Al-Zr co-doped ZnO transparent conductive thin film structure and electrical resistivity.XRD studies reveal that all the films are polycrystalline with a hexagonal structure and a preferred orientation along the C-axis.SEM shows that argon pressur...