In this paper,the effects of oxygen pressure and substrate temperature on the resistivity and optical transmittance of ZnO∶Al films by pulsed laser deposition have been investigated.The properties of the films have been analysed through Hall effect and X-ray diffraction.From electrical and optical analysis we observed the carrier concentration,optical transmittance and optical energy gap increased when the deposition temperature is raised from 200℃ to 400℃.The film prepared at 400℃ has a lower resistivity a...