Transparent conductive thin films of aluminum-doped zinc oxide (ZAO) were prepared by radio-frequency magnetron sputtering with ZAO (98 wt% ZnO, 2 wt% Al 2 O 3) as the ceramic target. The visible transmittance was investigated by ultraviolet-visible spectroscopy, the carrier concentration and Hall mobility were measured by the Van der Pauw method, and the phase composition was characterized by X-ray diffraction. The results show that the substrate temperature was a dominant factor of the properties, with the ZnO film deposited at a substrate temperature of 200 °C and a pure-argon gas pressure of 1 Pa exhibiting optimal performance. The resistivity and average transmittance in the wavelength range of 300-760 nm were 2.0 × 10 −4 Ω cm and 90.6%, respectively.
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